case study based questions class 9 biology tissue

A) Skeletal                                     done clear

B) Smooth done clear

C) Cardiac                                     done clear

D) Both [b] and [c] done clear

question_answer 27) Smooth muscles are also known as visceral muscles as they have the capacity to increase in size and bulk, whenever needed. Based on the information provided in the table, identify which of the following cannot be a function of these muscles?

A) Contraction of blood vessels done clear

B) Movement of food in alimentary canal done clear

C) Movement of body and skeleton done clear

D) Relaxation of blood vessels done clear

question_answer 28) Which of the following will be called multinucleated?

A) Skeletal muscles done clear

B) Cardiac muscles done clear

C) Smooth muscles done clear

D) Both [a] and [b] done clear

question_answer 29) Which of the following is/are voluntary muscles?

A) Smooth muscles done clear

C) Striated muscles done clear

question_answer 30) Select the statement that is true for cardiac muscles.

A) They are unstriated muscles done clear

B) Cells of these muscles are long cylindrical and multinucleate done clear

C) Cells of these muscles are long, cylindrical and uninucleate done clear

D) They are short and branched done clear

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Case Study Questions of Chapter 6 Tissues PDF Download

Case study Questions on Class 9 Science Chapter 6 are very important to solve for your exam. Class 9 Science Chapter 6 Case Study Questions have been prepared for the latest exam pattern. You can check your knowledge by solving case study-based questions for Class 9 Science Chapter 6 Tissues

In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.

Tissues Case Study Questions With answers

Here, we have provided case-based/passage-based questions for Class 9 Science  Chapter 6 Tissues

Case Study/Passage-Based Questions

Question 1:

Meristematic tissue takes up a specific role and loses the ability to divide. As a result, they form permanent tissue. This process of taking up a permanent shape, size, and function is called differentiation. Differentiation leads to the development of various types of permanent tissues.

Simple Permanent Tissue

Tissue is made of one type of cells, which look like each other. Such tissues are called simple permanent tissue. Parenchyma is the most common simple permanent tissue. It consists of relatively unspecialized cells with thin cell walls. They are living cells. They are usually loosely arranged, thus large spaces between cells (intercellular spaces) are found in this tissue. This tissue generally stores food. In some situations, it contains chlorophyll and performs photosynthesis, and then it is called chlorenchyma. In aquatic plants, large air cavities are present in parenchyma to help them float. Such a parenchyma type is called aerenchyma. Yet another type of permanent tissue is sclerenchyma. It is the tissue that makes the plant hard and stiff. We have seen the husk of a coconut. It is made of sclerenchymatous tissue. The cells of this tissue are dead. They are long and narrow as the walls are thickened due to lignin.

Complex tissues are made of more than one type of cell. All these cells coordinate to perform a common function. Xylem and phloem are examples of such complex tissues. They are both conducting tissues and constitute a vascular bundle. Xylem fibers are mainly supportive in function. Phloem transports food from leaves to other parts of the plant. Except for phloem fibers, other phloem cells are living cells.

(1) Tissue made of only one type of cell is termed as _________

(a) Simple permanent tissue

(b) Complex permanent tissue

(c) Simple Meristematic tissue

(d) Complex Meristematic tissue

Answer: (a) Simple permanent tissue

(2) Xylem and phloem are examples of

(a) Meristematic tissue

(b) Simple tissue

(c) Protective tissue

(d) Complex tissue

Answer: (d) Complex tissue

(3) In aquatic plants, which type of parenchymatissue is found?

(a) Aerenchyma

(b) Chlorenchyma

(c) Sclerenchyma

(d) Parenchyma

Answer: (a) Aerenchyma

(4) What is mean by Differentiation?

Answer: Meristematic tissue lose the ability to divide. As a result, they form a permanent tissue. This process of taking up a permanent shape, size, and a function is termed as differentiation.

(5) Enlist the type of parenchyma tissue.

Answer: There are three type of parenchyma tissue Aerenchyma Chlorenchyma Sclerenchyma

Question 2:

Bone is a solid, hard porous tissue. It forms the natural skeleton and gives the body its basic structure and also supports the body. Its matrix is impregnated with phosphates and carbonates of calcium and magnesium which provides hardness to it. The matrix also contains ossein protein. The matrix is arranged in concentric rings which are called lamellae. Bone cells lie between the lamellae in fluid-filled spaces called lacunae.

(i) Bone cells are also called : (a) Lacunae (b) Osteocytes (c) Neutrophils (d) Erythrocytes

Ans. (b) Osteocytes

(ii) The matrix inside the bone is arranged in concentric rings called ……… (a) Cytoplasm (b) Osteocyte (c) Lacunae (d) Lamellae

Ans. (d) Lamellae

(iii) To form natural skeleton and to give support to the body is the main function of ………. (a) Cells (b) Muscles (c) Bones (d) Ligaments

Ans. (c) Bones

(iv) The matrix of bone is impregnated with………… (a) Carbon dioxide and oxygen (b) Carbon dioxide and water (c) Sulphates of sodium (d) Phosphates and carbonates of calcium and magnesium

Ans. (d) Phosphates and carbonates of calcium and magnesium

(v) Bone cells lie between the lamellae in fluid-filled spaces called …………. (a) lamina (b) osteocytes (c) lacunae (d) ossein

Ans. (d) ossein

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Class 9 - NCERT Science Solutions

Intext questions 1.

What is a tissue?

A group of structurally and functionally similar cells performing a particular function is called a tissue.

What is the utility of tissues in multi-cellular organisms?

A group of cells that are similar in structure and/or work together to achieve a particular function forms a tissue. In multi-cellular organisms, tissues provide structural and mechanical strength and enables the division of labour. In such organisms, many tissues work together to form an organ and then an organ system.

Intext Questions 2

Name types of simple tissues.

Types of simple tissue are:

• Collenchyma
• Sclerenchyma

Where is apical meristem found?

Apical meristem is present at the growing tips of stems and roots.

Which tissue makes up the husk of coconut?

The husk of coconut is made of sclerenchymatous tissue.

What are the constituents of phloem?

The constituents of phloem are:

• Sieve cells
• Sieve tubes
• Companion cells
• Phloem fibres
• Phloem parenchyma

Intext Questions 3

Name the tissue responsible for movement in our body.

Muscular tissue is responsible for movement in our body.

What does a neuron look like?

A neuron cell looks like a tree. A neuron consists of a cell body with a nucleus and cytoplasm, from which long thin hair-like parts arises. Usually each neuron has a single long part (process), called the axon, and many short, branched parts (processes) called dendrites.

Give three features of cardiac muscles.

Three features of cardiac muscles are:

• They are cylindrical.
• They are uninucleate.
• They are branched.

What are the functions of areolar tissue?

Following are the functions of areolar tissue:

• It fills the space inside the organs.
• It supports internal organs.
• It helps in repair of tissues.

Define the term "tissue".

How many types of elements together make up the xylem tissue? Name them.

Four types of elements together make up the xylem tissue. They are:

• Tracheids — They are thick walled and tubular dead cells. They transport water and mineral.
• Vessels — They are tubular cells and transport water and mineral.
• Xylem parenchyma — They store food.
• Xylem fibres — They are supportive in function.

How are simple tissues different from complex tissues in plants?

Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.

What are the functions of the stomata?

Following are the functions of the stomata:

• Exchange of gases with the atmosphere occur through stomata.
• Transpiration (loss of water in the form of water vapour) also takes place through stomata.

Diagrammatically show the difference between the three types of muscle fibres.

What is the specific function of the cardiac muscle?

The specific function of the cardiac muscle is to contract and expand. They show rhythmic and involuntary contraction and relaxation throughout life enabling the heart to beat and pump blood to all parts of the body.

Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.

Draw a labelled diagram of a neuron.

Labelled diagram of a neuron is shown below:

Question 10

Name the following.

(a) Tissue that forms the inner lining of our mouth.

(b) Tissue that connects muscle to bone in humans.

(c) Tissue that transports food in plants.

(d) Tissue that stores fat in our body.

(e) Connective tissue with a fluid matrix.

(f) Tissue present in the brain.

(a) Squamous epithelium

(b) Tendons

(d) Adipose tissue

(f) Nervous tissue

Question 11

Identify the type of tissue in the following: skin, bark of tree, bone, lining of kidney tubule, vascular bundle.

• Skin — epithelial tissues
• Bark of tree — cork (formed by secondary meristem)
• Bone — Connective tissue (Bone cells are embedded in a hard matrix that is composed of calcium and phosphorus compounds.)
• Lining of kidney tubule — Cuboidal epithelium (with cube-shaped cells)
• Vascular bundle — Xylem and phloem (Complex permanent tissue)

Question 12

Name the regions in which parenchyma tissue is present.

The parenchyma tissue can be found in the leaf, fruits, as well as flowers. It is located beneath the epidermis.

Question 13

What is the role of epidermis in plants?

The primary role of epidermis in plants is protection. The entire surface of a plant has an outer covering epidermis. It protects all the parts of the plant. Epidermal cells on the aerial parts of the plant often secrete a waxy, water resistant layer on their outer surface. This aids in protection against:

• loss of water
• mechanical injury
• invasion by parasitic fungi

Question 14

How does the cork act as a protective tissue?

A strip of secondary meristem located in the cortex forms layers of cells which constitute the cork. Cells of cork are dead and compactly arranged without intercellular spaces. They also have a substance called suberin in their walls that makes them impervious to gases and water. This is how cork act as a protective tissue protecting the plants from any physical or mechanical injuries and pathogenic infection.

Question 15

Complete the following chart:

The completed chart is shown below:

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NCERT Solutions for Class 9 Science Chapter 6 - Tissues

• NCERT Solutions
• Chapter 6 Tissues

NCERT Solutions for Chapter 6 Tissue Class 9 Science Download FREE PDF

In Class 9 Science Chapter 6 - "Tissues," we explore the vital concepts of plant and animal tissues. From understanding the structure and functions of various plant tissues to exploring the complexities of animal tissues, Chapter Tissue Class 9 provides a comprehensive understanding of the fundamental units that make up living organisms. Class 9 Science Ch 6 Question Answer offers clarity and guidance, ensuring that students easily grasp these essential concepts.

Download the FREE PDF of Class 9 Science Chapter 6 Question Answer prepared by Vedantu experts and updated according to the latest Class 9 Science syllabus , and begin your journey toward academic success with Vedantu!

Quick Insights of “Tissues” - NCERT Solutions for Class 9 Chapter 6 Science

Gain a comprehensive overview of the different types of tissues forming the building blocks of plants and animals and explore their functions in detail.

Understand the organisation of cells into tissues and their roles in maintaining the structure and function of organs.

Class 9 Science Chapter 6 explores the characteristics and functions of epithelial, connective, muscular, and nervous tissues. 

Tissues Class 9 Questions And Answers thoroughly explain all topics and ensure complete exam preparation. 

Utilising these Class 9 Tissue Question Answers can help students assess their level of preparation and understanding of crop production and management concepts.

Vedantu offers additional resources such as class notes, important concepts, formulas, and exemplar solutions to reinforce learning and ensure a strong grasp of foundational scientific principles.

NCERT Solutions of Class 9 Science Chapter 6 – Free PDF Download

Intext questions:.

1. What is a tissue?

Ans: Tissue is a collection of cells with comparable structures that are placed in order to fulfill a given activity.

2. What is the utility of tissues in multicellular organisms?

Ans: Tissues in multicellular organisms are differentiated to perform a specific function at a given location, a process known as division of labor. Nerve cells, for example, make up the neurological tissue that aids in message transmission, whereas muscular cells make up the muscle tissue and muscle tissue is a type of tissue that aids in movement.

3. Name the types of simple permanent tissues

Ans: Parenchyma, Collenchymas, and Sclerenchyma are the three forms of simple permanent tissues. Aerenchyma and chlorenchyma are two types of parenchyma tissue.

4. Where is apical meristem found?

Ans:   At the growing tips of stems and roots, the apical meristem is present.

5. Which tissue makes up the husk of coconut?

Ans: Sclerenchyma tissue is a form of simple permanent tissue that makes up the husk of the coconut.

6. What are the constituents of phloem?

Ans: The food-conducting tissue of plants is termed as phloem. Sieve tubes, Companion cells, Phloem parenchyma, and Phloem fibers are the four components.

7. Name the tissue responsible for movement in our body.

Ans: Muscle Tissues are responsible for movement.

8. What does a neuron look like?

Ans: A neuron is made up of three parts: the cell body, the axon, and the dendrites. Dendrites are a significant number of extensions that stretch outward from the cell body and resemble branches. A nucleus and other cell organelles make up the cell body. An axon is a tube-like structure that transports an electrical impulse from the cell body to the neuron's opposite end structures.

9. Give three features of cardiac muscles.

Ans:  Features of cardiac muscles:

They are involuntary in nature.

They are cylindrical, branched, and uninucleate in structure.

Throughout their lives, they exhibit cyclic contraction and relaxation.

10. What are the functions of areolar tissue?

Ans: Areolar tissues are commonly seen in animals. They are connective tissues that exist between the skin and the muscles. They can also be found in the bone marrow and around blood arteries and nerves. These tissues take up a lot of room inside the organs. They protect the internal organs and aid in tissue restoration in the event of harm.

1. Define the term “tissue”.

Ans:  A tissue is described as a group of cells with identical structures that collaborate to execute a certain purpose.

2. How many types of elements together make up the xylem tissue? Name them.

Ans: The xylem tissue is made up of four main elements as mentioned :

Xylem fibers

Xylem parenchyma

3. How are simple tissues different from complex tissues in plants?

4. Differentiate between parenchyma, collenchyma, and sclerenchyma, on the basis of their cell wall.

5. What are the functions of the stomata?

Ans: Stomata functions include the exchange of gases with the atmosphere. The stomata are responsible for transpiration.

6. Diagrammatically show the difference between the three types of muscle fibres.

Ans: Striated muscles, smooth muscles (unstriated muscle fibre), and cardiac muscles are the three types of muscular fibres.

Striated Muscle cells

Smooth muscle cells

Cardiac muscle cells

7. What is the specific function of the cardiac muscle?

Ans: The cardiac muscle is responsible for controlling the heart's contraction and relaxation.

8. Differentiate between striated, unstriated, and cardiac muscles on the basis of their structure and site/location in the body.

Ans: Differences between striated, unstriated and cardiac muscles are:

9. Draw a labeled diagram of a neuron.

Structure of Neuron

10. Name the following:

Tissue that forms the inner lining of our mouth. 

Ans: Epithelial tissue 

Tissue that connects muscle to bone in humans. 

Ans: Dense regular connective tissue (tendons)

Tissue that transports food in plants. 

Ans: Phloem 

Tissue that stores fat in our body. 

Ans: Adipose tissue 

Connective tissue with a fluid matrix. 

Tissue present in the brain.

Ans: Nervous tissue

11. Identify the type of tissue in the following: skin, the bark of a tree, bone, lining of kidney tubule, vascular bundle.

 Ans: 

Skin: Stratified squamous epithelial tissue

The Bark of a Tree: Simple permanent tissue

Bone: Connective tissue

The Lining of Kidney Tubule: Cuboidal epithelial tissue

 Vascular Bundle: Complex permanent tissue

12. Name the regions in which parenchyma tissue is present.

 Ans: Leaves, fruits, and flowers.

13. What is the role of the epidermis in plants?

Ans: Role of the epidermis:

Protection of different parts of the plant.

Epidermal cells present in roots, help in the absorption of water.

For protection against loss of water, mechanical injury, and parasitic fungus by producing a waxy, water-resistant covering called the cuticle, which is made of cutin, on the outer surface of the plant.

14. How does the cork act as a protective tissue?

Ans: The cork, which is made up of dead cells, is the bark of a tree. It protects the plant from mechanical damage and temperature extremes, as well as it prevents water loss through evaporation.

15. Complete the table:

Class 9 Science Chapter 6 Quick Overview of Detailed Structure of Topics

Class 9 Chapter 6 Science - Tissues - Important Points

Tissues are groups of cells with similar structures and functions. They work together to perform specific tasks in an organism.

Plant Tissues: Plant tissues are categorised into two types:

Meristematic Tissues: These tissues are responsible for the growth of the plant. They are found at the tips of roots and shoots.

Permanent Tissues: These tissues are further classified into three types:

Simple Permanent Tissues: Parenchyma, Collenchyma, and Sclerenchyma

Complex Permanent Tissues: Xylem and Phloem

Animal Tissues: Animal tissues are categorised into four types:

Epithelial Tissue: Covers the body surfaces, lines the body cavities, and forms glands.

Connective Tissue: Provides support, protection, and structure to the body. Examples include bone, cartilage, blood, and adipose tissue.

Muscular Tissue: Responsible for movement. There are three types: skeletal, smooth, and cardiac muscle.

Nervous Tissue: Transmits and receives nerve impulses. It consists of neurons and neuroglia.

Plant tissues are mainly involved in providing support, conducting water and nutrients, storage, and photosynthesis.

Animal tissues perform various functions such as protection, support, movement, and coordination of body activities.

Benefits of  NCERT Solutions for Tissue Class 9 Chapter 6

Tissue Class 9 Question Answer provides clear explanations of the concepts covered in the chapter and helps students understand tissues thoroughly.

Class 9 Science Chapter 6 Question Answer covers important concepts related to both plant and animal tissues, including their types, functions, and characteristics.

A structured format that is easier for students to navigate through different topics and sections of the chapter is arranged in Class 9 Science Ch 6 Question Answer. 

Tissue Class 9 Solutions include short question answers, which assist students in completing their last-minute revisions efficiently and effectively. 

Class 9 Science Chapter 6 Question Answer incorporates practice questions and exercises that allow students to test their understanding of tissue concepts. This practice reinforces learning and prepares students for exams.

By referring to Class 9 Science Chapter 6 Question Answer, students can effectively prepare for exams as the solutions cover all the topics and questions likely to be asked in assessments.

Tissue Class 9 Question Answer aligns with the curriculum prescribed by educational boards, ensuring that students cover the topics and concepts required for their academic year.

Important Study Materials for Chapter 6 Tissues Class 9 Science

Vedantu’s NCERT Class 9 Tissue Question Answer is essential for understanding the different types of tissues in plants and animals. These solutions simplify complex concepts, making it easier for students to grasp the structure and function of various tissues. The focus should be on understanding the characteristics and roles of each tissue type. Vedantu provides detailed answers and explanations to help students prepare effectively. Notably, the previous year's question papers often included around 5-6 questions from this chapter. Using Vedantu's solutions can greatly improve your understanding and performance in exams.

NCERT Solutions for Class 9 Science - Chapter-Wise Links

NCERT Other Study Resources for Class 9 Science

For complete preparation of Science for CBSE Class 9 exams, check out the following links for different study materials available at Vedantu.

FAQs on NCERT Solutions for Class 9 Science Chapter 6 - Tissues

1. From the NCERT question of the Chapter ‘Tissues’ - What are the Two Types of Vascular Bundles Present in Plants?

The two types of vascular bundles are

Open Vascular Bundles: In these types of vascular bundles, cambium tissue is present. It is present in between xylem and phloem elements. The bundles are said to be open. These types of bundles due to the presence of cambium, have the ability to form secondary xylem and phloem in other words, they are capable of secondary growth. As they are open for secondary growth, therefore they are named open vascular bundles. They are present in dicots.

Closed Vascular Bundle: The cambium tissue is absent in these types of vascular bundles. The xylem and phloem tissues are joined together and no cambium is present in them. No secondary growth is seen in these types of vascular bundles. Due to this, they are known as closed vascular bundles as they are closed for secondary growth.

2. What is Cork Cambium? According to NCERT Solutions, Class 9 Chapter 6

The cork cambium is the main tissue that is responsible for the formation of wood. The girth of the stem increases due to increased activity of the vascular cambium. As the girth keeps increasing the outer cortical layers starts rupturing. So, cork cambium produces new layers that replace the damaged or ruptured layers. Cork cambium is also called phellogen. The cork cambium has another name that is stellar cambium. Phellogen is thick and has two layers. The outer one forms the cork and the inner one forms the secondary cortex. The cells of cork are compactly arranged and in the beginning, they have thin cellulose cell walls. When they mature the living part is replaced by the non-living part which is the formation of wood material. The cell walls of the cork become thick by the deposition of suberin.

3. What concepts can I learn from the NCERT Solutions for Chapter 6 of Class 9 Science?

Chapter 6 of NCERT Class 9 Science deals with the topic of tissues. In this chapter, the first concept that you need to learn is what tissues are. You need to understand and learn the meaning and definition of tissues. The other concepts that should be learned are the various functions that different kinds of tissues carry out. Other than that, you will learn thoroughly about the various types of tissues that exist.

4. Is the NCERT Solutions for Chapter 6 of Class 9 Science sufficient for exam preparation?

For any exam preparation, the main thing to do is to read your NCERT textbook thoroughly. Once you are done reading your NCERT textbook, you should start practising chapter-wise questions. For this, you will need to consult NCERT Solutions. The NCERT solutions will contain accurate answers to all of your questions related to any chapter. Vedantu also provides a download feature that is free of cost. Hence, the NCERT Solutions along with your textbook will be sufficient for your Class 9 Science exam preparation.

5. Where can I find answers for Chapter 6 of the Class 9 NCERT Science book?

Tissue is Chapter 6 of the Class 9 NCERT textbook. Every chapter in your NCERT book will provide you with relevant questions which you will need to practice to be able to answer your exams properly. You will find the answers to all the questions from this chapter in your NCERT textbook itself. For this, you need to be thorough with reading your textbook. Other than that, you can visit Vedantu app or website for answers to your questions.

6. Why is Chapter 6 Tissues of Class 9 Science important?

Tissue is one of the most important chapters of Class 9 Science. After Cells, Tissue is the chapter that teaches you about the basic structure and mechanisms of plant and animal bodies. This chapter is important for you to learn because without knowing the basics of this chapter, you will not be able to proceed with the Science chapters in higher classes. To make preparation easier, you can refer to NCERT Solutions too available on the Vedantu website and app.

7. What topics are covered in Chapter 6, Tissues?

Chapter 6 covers various types of plant tissues (Meristematic and Permanent tissues) and animal tissues (Epithelial, Connective, Muscular, and Nervous tissues). It explains their structure, functions, and significance in organisms.

8. How do NCERT Chapter 6 Tissues Class 9 Questions and Answers help you understand complex topics?

Class 9 Tissue Question Answer breaks down complex topics into simpler explanations and step-by-step solutions. They also provide concepts and examples to make difficult concepts easier to grasp.

NCERT Solutions for Class 9 Science

Ncert solutions for class 9.

Extra Questions for Class 9 Science Chapter 6 Tissues

Extra questions for Class 9 Science Chapter 6 Tissues with answers is given below. Our subject expert prepared these solutions as per the latest NCERT textbook. These questions will be helpful to revise the all topics and concepts. CBSE Class 9 extra questions are the most simple and conceptual questions that are prepared by subject experts for the students to study well for the final exams. By solving these extra questions, students can be very efficient in their exam preparations.

Tissues Class 9 Science Extra Questions and Answers

Very short answer questions.

1: Name the tissues responsible for the movement of the body. Answer:  Muscle tissue and nervous tissue

2: How does neuron look like? Answer:  A neuron is the unit cell of nervous tissue. It is a thread-like structure with cell body and axon.

3: Name the types of simple tissues. Answer:  (a) Parenchyma (b) Collenchyma (c) Sclerenchyma

4: Name the types of complex tissues. Answer:  Xylem and phloem.

5: Where is apical meristem found? . Answer:  It is present at the growing tips of stem and root, it increases the length of the stem and roots.

6: Which tissue make up the husk of coconut? Answer:  Sclerenchyma.

7: What are the constituents of phloem? Answer:  Phloem constitutes the sieve tubes, companion cell, phloem parenchyma and phloem fibres.

8: Define aerenchyma. Answer:  When the cells have air-filled large cavities of parenchyma, it is called aerenchyma. Aerenchyma helps aquatic plants in floating.

9: What is the utility of tissues in multicellular organisms? Answer:  It helps in growth, organisation of different organs and performing functions.

10: Name the two types of tissues. Answer:  Plant tissues and animal tissues.

11: Name the two types of plant tissue. Answer:  Meristematic tissue and permanent tissue.

12: What is differentiation? Answer:  The process of taking up a permanent shape, size and function by cells is called differentiation.

13: Name the three types of meristematic tissues. Answer:  The three types are: (a) Apical tissue—tips of root and shoot (b) Lateral tissue—sides of stem (c) Intercalary tissue—at nodes

14: Where is apical tissue found? Answer:  Present at the tips of roots and stems.

15: Tissues present at the lateral surface of the stem are called apical tissues. Put (T) if true and put (F) if false. Rewrite the answer if (F). Answer:  (F). Tissues present at the lateral surface of the stem are called lateral tissue.

16: Which tissues are present at the nodes of the plants? Answer:  Intercalary tissue.

17: What are the various types of blood cells? Answer:  There are three types: (a) RBC’s (b) WBC’s and (c) Platelets.

18: What are tracheids? Answer:  They are elongated cells with tapering ends.

19: What are guard cells? Answer:  Each stomata is bounded by a pair of specialised kidney-shaped epidermal cells called guard cells.

20: Epithelial tissue is the simplest tissue. Write (F) for false or (T) for true. Answer:  (T).

21: What are the functions of cuboidal epithelium? Answer:  It helps in absorption, excretion, secretion, it also provides mechanical support.

Short Answer Type Questions

1: Give four differences between bone and cartilage. Answer:

2: Give the functions of bone.

Answer:  The functions of bone are: (i) It provides shape to the body. (ii) It provides skeletal support to the body. (iii) It anchors the muscles. (iv) It protects the vital body organs like brain, lungs, etc. 3: Give the functions of cartilage. . Answer:  (i) It provides support and flexibility to the body parts. (ii) It smoothens surface at joints.

4: Fill in the blanks: (i) Water and minerals are conducted by _________ (ii) In higher plants food is conducted by _________ (iii) Blood is a __________ tissue. (iv) Bone consists of __________ cells. (v) Cartilage consists of __________ cells. (vi) Fibres are absent in __________ type of connective tissue.

Answer:  (i) Xylem (ii) Phloem (iii) Connective (iv) Osteocyte (v) Chondrocyte (vi) Blood

5: What are the functions of areolar tissue?

Answer:  Functions are: (i) It helps in repair of tissues after an injury. (ii) It also helps in combating foreign toxins. (iii) It fixes skin to underlying muscles. 6: Give difference between xylem and phloem. Answer:

7: What are fibres? Answer:  Fibres consist of very long, narrow and thick cells. Example, jute fibre.

8: Name the tissues for the following: (a) Stores fat in animal body. (b) Divides and re-divides to grow in plants. (c) Tissue that joins hone to hone. (d) Covers the external surface of animal body.

Answer:  (a) Adipose tissue (b) Meristematic tissue . (c) Ligament (d) Epithelial tissue.

9: What is stomata? Answer:  Stomata are small pores present on the surface of a leaf which helps in the exchange of gases and in transpiration.

10: Why does epidermal tissue have no intercellular space?

Answer:  The epidermal (layer) tissue forms a protective outer covering for the plants and it  protects the internal parts of the plant. It aid in the protection against loss of water, mechanical injury and invasion by parasitic fungi. For this protective role to play the continuation of cells is necessary, hence it does not have intercellular space.

11: Name and give the function of each cell of xylem:

Answer:  Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres. Tracheids and vessels—Allows the transport of water and minerals. Xylem parenchyma—Stores food and helps in the sideways conduction of water. Xylem fibres—Are supportive in function.

12: What is the function and location of stratified squamous epithelium? Answer:  Stratified squamous epithelium is present in the skin. The layers of cells are arranged to prevent wear and tear.

13: Give difference between ligament and tendon. Answer:

14: Give difference between striated muscles and unstriated muscles. Answer:

15: State the difference between bone and blood. Answer:

16: Name all different types of tissues present in animal.

Answer:  There are four main types of tissues present in animal. ‘ (a) Epithelial tissue present on the outer and inner lining of the body. (b) Muscular tissue are made up of muscles, help in movement. (c) Connective tissue connects the different organs in the body. (d) Nervous tissue consists of nerve cells and are present in the nervous system.

17: Why is blood called connective tissue?

Answer:  The blood is composed of cells and plasma. Plasma is a fluid and cells like red blood cells, white blood cells and platelets are present in it. All these cells are connected due to plasma. It also transports food, water to different parts of the body and connects them.

18: Name three types of muscle tissues and give function of each.

Answer:  Three types of muscle tissues are: (a) Striated muscle (b) Smooth muscle (c) Cardiac muscle

(a) Striated muscle: These muscles show alternate light and dark bands or striations. They are involuntary and present in skeletal tissues, help in movement of body and bones.

(b) Smooth muscle: These are involuntary muscles, control the movement of food in alimentary canal, contraction and relaxation of blood vessels. Present in iris, uterus etc.

(c) Cardiac muscle: These muscles are present in heart, help in the rhythmic contraction and relaxation throughout the life.

19: State the difference between simple tissues of plants. Answer:  The simple tissues of plants are: (i) Parenchyma (v) Collenchyma (iii) Sclerenchyma

20: With the help of diagram show the difference between striated muscle fibre, smooth muscle fibre and cardiac muscle fibre. Answer:

21: Name different types of meristematic tissue and draw diagram to show their location.

Answer:  The 3 different types of meristematic tissue are: (a) Apical meristem—Function: growth in length. (b) Lateral meristem—Function: growth in thickness. (c) Intercalary meristem—Function: growth in internodes.

22: Explain the structure, function and location of nervous tissue.

Answer:  Structure: Nervous tissue consists of cells called nerve cells joined end to end (neurons). A neuron (nerve cell) consists of a cell body with nucleus and cytoplasm. From these cell body a long thin hair-like parts arise called axon and many short branched parts called dendrites. Location: Nervous tissue are present in brain, spinal cord and nerves. Function: Nervous tissue receives the stimuli and transmit the stimulus rapidly from one place to another within the body. The nerve impulse allows us to move our muscles and respond to any stimuli.

23: Give the flow chart of plant tissues. Answer:

Long Answer Type Questions

1: Write a note on plant tissues.

Answer:  Plant tissues consist of two main types of tissue.

Parenchyma:  Present in soft parts of the plant.

Collenchyma: Provides mechanical support to plant present in stalks. Sclerenchyma: They provide strength and flexibility to the plants.

Xylem:  Conduct water in plants from root to shoot. Consists of tracheids, vessels, xylem parenchyma and xylem fibres.

Phloem: Conduct food to all parts of plant. Consist of sieve tubes, companion cell, phloem parenchyma and phloem fibres.

2: Show the types of animal tissues using flow chart. Answer:

3: What is connective tissue? Explain its types.

Answer:  The connective tissue consists of different types of cells, all of them perform same function.

Areolar connective tissue: It is found between the skin and muscles, around blood vessels and nerves and in the bone marrow. Areolar tissue fills the space inside the organs. It supports internal organs and helps in repair of tissues.

Adipose tissue: Adipose tissue stores fat, found below the skin and between internal organs. The cells of this tissue are filled with fat globules. It acts as insulator due to fat storage.

Blood:  It has a fluid called plasma, in plasma are present red blood cells, white blood cells and platelets. Blood flows all over the body and helps in the transport of gases, digested food, hormones and waste material to different parts of the body.

Lymph:  Lymph carries digested fat and lot of white blood cells in the plasma. Bone: It forms the framework that supports the body. It supports the different parts of our body. It is strong and non-flexible tissue.

Cartilage:  It is present in nose, ear, trachea and larynx. It smoothens bone surfaces at joints.

Tendon:  It connects bone and muscles. These tissues are fibrous, flexible and with lot of strength.

Ligament:  It connects bone to ‘bone. It is elastic, has lot of strength.

4: Describe ‘epidermis’ in plants.

Answer:  Epidermis forms the entire outermost layer of the plant. It is made up of single cell layer. It protects all the internal parts of the plant. On aerial parts, epidermis secretes waxy, water-resistant layer on their outer surface. This helps in protection against loss of water, mechanical injury and invasion of parasitic fungi.

In leaves, epidermis consists of small pores called stomata. These pores help in the transpiration and exchange of gases, like oxygen and carbon dioxide for plants. In roots, epidermis have long hair-like parts that provide greater surface for water absorption. In desert plants, epidermis has a thick waxy coating of cutting which acts as a water proofing agent.

5: Explain the “complex tissue” of plants.

Answer:  Complex tissues are made up of more than one type of cells. All these cells co-ordinate to perform common function. These are—xylem and phloem. Both are conducting tissues and form a vascular bundle.

Xylem consists of—tracheids, vessels, xylem parenchyma and xylem fibres. Most of these cells are dead. Tracheids and vessels helps in water transportation, parenchyma stores food and helps in the sideways conduction of water and fibres are mainly supportive in function. Phloem is made up of four types of elements—sieve tubes, companion cells, phloem fibres and phloem parenchyma. It helps in the transportation of food in both the directions, i.e. from leaves to roots and to other parts of the plant.

Value Based Questions

1: A group of students completed the project of finding the botanical names of all the trees present in the school campus. They prepared metal plates with names carved on it, to fix it on the plant trunks. Shreya was concerned that if the metal plate is fixed into tree many cells of the tree may get damaged. But the group members explained her that the outer layer of trunk does not have living cells and there won’t be any damage to the tree. (a) What type of cells are present on the outer layer of the bark/tree trunk? (b) How does the cork act as a protective tissue? (c) What value of the group is seen in the above cast?

Answer:  (a) On the outer layer of the tree trunk/bark all thick layer of dead cells is present which acts as protective tissue. (b) In cork, all cells are dead without intercellular spaces, the walls of the cells have deposition of suberin. (c) The students in a group show team effort, peer learning and cooperative.

2: A paralytic patient was unable to walk. ‘The family member of the patient took the outmost care of the patient. (a) Name two tissues responsible for the movement of a body. (b) Name the tissues present in brain and spine. (c) What value of the family members is seen in the above case?

Answer:  (a) The two tissues responsible for movement of the body are muscular tissue and nervous tissue. (b) The tissues present in brain and spine are nervous tissues. (c) The family members showed the value of being caring, responsible, dutiful and kind.

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Class 9 Science Tissues

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• NCERT Exemplar
• Science Exemplar Class 9

NCERT Exemplar Class 9 Science Solutions for Chapter 6 - Tissues

Ncert exemplar solutions class 9 science chapter 6 – free pdf download.

The NCERT Exemplar Solution for Class 9 Science Chapter 6 Tissues is a premier study material that will help the students understand the concepts of the chapter Tissue. The tissue is crucial in order to understand Biology topics in Class 10 and in higher secondary classes. Students should learn this topic thoroughly to avoid difficulty in understanding the advanced concepts. The NCERT Exemplar has a variety of questions that include multiple-choice questions on plant tissues, short-answer questions and long-answer questions. These questions provide you with much necessary practice before facing Class 9 examinations.

In this chapter, students will learn about different types of tissues and their properties. There are two types of tissues : the first one is plant tissue, and the second one is animal tissue. Learn about different types of tissues and their types, like epithelial tissue, connective tissue and muscular tissue. Visit the below link to download the NCERT Exemplar for Science Class 9 Chapter 6 Tissues .

Download the PDF of NCERT Exemplar for Class 9 Science Chapter 6 – Tissues

Access Answers of NCERT exemplar for Class 9 Science Chapter 6 – Tissues

Multiple choice questions.

1. Which of the following tissues has dead cells?

(a) Parenchyma

(b) Sclerenchyma

(c) Collenchyma

(d) Epithelial tissue

Answer is (b) Sclerenchyma

Explanation:

Living tissues with thin cell wall with central vacuole and dense cytoplasm. Parenchyma cells are located in the soft parts of the plants such as pith and cortex.

Sclerenchyma

These are dead tissues which have thick cell wall due to deposition of lignin. They are generally located in the leaf veins, hard coverings of the seeds and can also be found surrounding the vascular bundle.

Collenchyma

Living tissues which have an elongated shape and thick cell wall in the corner. Collenchyma tissue can be located in the leaf stalks, below the epidermis, etc.

Epithelial tissues

Epithelial tissues are covering or protective tissues in the animal body. Almost all organs and cavities are covered by Epithelium.

2. Find out incorrect sentence

(a) Parenchymatous tissues have intercellular spaces

(b) Collenchymatous tissues are irregularly thickened at corners

(c) Apical and intercalary meristems are permanent tissues

(d) Meristematic tissues, in its early stage, lack vacuoles

Answer is (c) Apical and intercalary meristems are permanent tissues

Meristematic tissues are dividing tissue. They are not specialised to perform a specific function. They are responsible for the growth of plants. When meristematic tissue takes up a specific role and loses its ability to divide, it becomes a permanent tissue. Hence, the statement “Apical and Intercalary meristem are permanent tissue” is wrong.

3. The girth of stem increases due to

(a) apical meristem

(b) lateral meristem

(c) intercalary meristem

(d) vertical meristem

Answer is (b) lateral meristem

4. Which cell does not have perforated cell wall?

(a) Tracheids

(b) Companion cells

(c) Sieve tubes

(d) Vessels

Answer is (a) Tracheids

5. Intestine absorbs the digested food materials. What type of epithelial cells are responsible for that?

(a) Stratified squamous epithelium

(b) Columnar epithelium

(c) Spindle fibres

(d) Cuboidal epithelium

Answer is (b) Columnar epithelium

The columnar epithelium is pillar-like cells which have nuclei towards their base. Columnar epithelium forms the lining of the stomach, small intestine and colon, forming the mucous membrane. They facilitate movement across the epithelial barrier. Their main function is absorption and secretion.

6. A person met with an accident in which two long bones of hand were dislocated. Which among the following may be the possible reason?

(a) Tendon break

(b) Break of skeletal muscle

(c) Ligament break

(d) Areolar tissue break

Answer is (c) Ligament break

Dislocation of bones occurs when joints held by ligaments get separated.

Tendons join skeletal muscle and they cause inflammation upon a break.

Break of skeletal muscle cannot be the reason for bone dislocation as bones are joined by ligaments.

Areolar tissues are found around muscles, nerves and blood vessels hence they are not connected with bone dislocation.

7. While doing work and running, you move your organs like hands, legs etc. Which among the following is correct?

(a) Smooth muscles contract and pull the ligament to move the bones

(b) Smooth muscles contract and pull the tendons to move the bones

(c) Skeletal muscles contract and pull the ligament to move the bones

(d) Skeletal muscles contract and pull the tendon to move the bones

Answer is (d) Skeletal muscles contract and pull the tendon to move the bones

While doing work and running, you move your organs like hands, legs etc, skeletal muscles contract and they pull the tendon, connecting muscles to bones. This will help bones to move and they do not pull the ligament as that will cause a sprain or stretch.

8. Which muscles act involuntarily?

(i) Striated muscles

(ii) Smooth muscles

(iii) Cardiac muscles

(iv) Skeletal muscles

(a) (i) and (ii)

(b) (ii) and (iii)

(c) (iii) and (iv)

(d) (i) and (iv)

Answer is (b) (ii) and (iii)

Skeletal muscles are voluntary muscles which are also striated muscles hence the answer should be cardiac muscles which are smooth muscles.

9. Meristematic tissues in plants are

(a) localised and permanent

(b) not limited to certain regions

(c) localised and dividing cells

(d) growing in volume

Answer is (c) localised and dividing cells

Meristematic tissues in plants are the dividing cells, which are responsible for plant growth in certain specific region. Meristematic tissues are classified as apical, lateral and intercalary based on their location.

10. Which is not a function of epidermis?

(a) Protection from adverse condition

(b) Gaseous exchange

(c) Conduction of water

(d) Transpiration

Answer is (c) Conduction of water

Conduction of water is a function of xylem tissue whereas protection, gaseous exchange and transpiration are the function of epidermis.

11. Select the incorrect sentence

(a) Blood has matrix containing proteins, salts and hormones

(b) Two bones are connected with ligament

(c) Tendons are non-fibrous tissue and fragile

(d) Cartilage is a form of connective tissue

Answer is Tendons are non-fibrous tissue and fragile.

Tendons are fibrous tissues which are highly elastic and strong.

12. Cartilage is not found in

Answer is (c) kidney

Explanation

Cartilage is a connective tissue which provides support and flexibility to various parts of our body. Cartilage is found in nose, ear, larynx but not in kidney.

Renal tubules and corpuscles in the kidney are formed by Cuboidal epithelium tissue.

13. Fats are stored in human body as

(a) cuboidal epithelium

(b) adipose tissue

(d) cartilage

Answer is (b) adipose tissue

Adipose tissue present below the skin and between internal organs stores fat. Cells in these tissues are filled with fat globules. Fat storage acts as an insulator.

14. Bone matrix is rich in

(a) fluoride and calcium

(b) calcium and phosphorus

(c) calcium and potassium

(d) phosphorus and potassium

Answer is (b) calcium and phosphorus

15. Contractile proteins are found in

(c) muscles

Answer is (c) muscles

Muscles cells have contractile proteins in them. These proteins are responsible for the contraction and relaxation of muscles.

16. Voluntary muscles are found in

(a) alimentary canal

(c) iris of the eye

(d) bronchi of lungs

Answer is (b) limbs

We can move some muscles on our own will. Muscles present in our limbs can move at our will and stop when we so decide. Such muscles are called voluntary muscles. On the other hand, alimentary canal, iris of the eye and bronchi of lungs has involuntary muscles.

17. Nervous tissue is not found in

(b) spinal cord

(c) tendons

Answer is (c) tendons

Connective tissue which connects muscles to bones is tendons. They are fibrous in nature and give strength and limited flexibility.

18. Nerve cell does not contain

(b) nerve endings

(d) dendrites

Answer is(c) tendons

Neurons do not contain tendons as they are connective tissues that join skeletal muscles to bones.

19. Which of the following helps in repair of tissue and fills up the space inside the organ?

(b) Adipose tissue

(c) Areolar

(d) Cartilage

Answer is (c) Areolar

Areolar connective tissue is found between the skin and muscles, around blood vessels and nerves and in the bone marrow. It fills the space inside the organs, supports internal organs and helps in the repair of tissues.

Areolar tissue located between the skin and muscles, around blood vessels and nerves and in the bone marrow. Areolar tissue fills the space inside the organs and supports internal organs and helps in the repair of tissue.

20. The muscular tissue which functions throughout the life continuously without fatigue is

(a) skeletal muscle

(b) cardiac muscle

(c) smooth muscle

(d) voluntary muscle

Answer is (b) cardiac muscle

Heart muscles are cylindrical, branched and uninucleated which shows rhythmic contraction and relaxation throughout life. Skeletal muscle, smooth muscle and voluntary muscles work as and when required.

21. Which of the following cells is found in the cartilaginous tissue of the body?

(a) Mast cells

(b) Basophils

(c) Osteocytes

(d) Chondrocytes

Answer is (d) Chondrocytes

Mast cells are found in areolar tissue.

Basophils are found in blood

Osteocytes are found in bone.

22. The dead element present in the phloem is

(a) companion cells

(b) phloem fibres

(c) phloem parenchyma

(d) sieve tubes

Answer is (b) phloem fibres

Phloem fibres possess narrow lumen and they are thick-walled elongated spindle-shaped dead cells. They provide mechanical support to the tissue. Phloem parenchyma is thin-walled living cells of parenchyma. They have two functions, storage and lateral food conduction. Except for phloem fibres, other phloem cells are living cells.

23. Which of the following does not lose their nucleus at maturity?

(a) Companion cells

(b) Red blood cells

(d) Sieve tube cells

Answer is (a) Companion cells

24. In desert plants, the rate of water loss gets reduced due to the presence of

(a) cuticle

(b) stomata

(d) suberin

Answer is (a) cuticle

The cuticle is a protective layer covering the epidermis of the leaf, young shoots and other aerial parts of a plant. It contains lipids and polymers impregnated with wax. This minimizes the effect of heat and reduces the loss of water.

25. A long tree has several branches. The tissue that helps in the sideways conduction of water in the branches is

(a) collenchyma

(b) xylem parenchyma

(c) parenchyma

(d) xylem vessels

Answer is (b) xylem parenchyma

26. If the tip of sugarcane plant is removed from the field, even then it keeps on growing in length. It is due to the presence of

(a) cambium

(b) apical meristem

(c) lateral meristem

(d) intercalary meristem

Answer is (d) intercalary meristem

Stem located at the base of leaves or nodes and leads to the increase in the length of an organ such as leaves and internodes is intercalary meristem. They are responsible for the longitudinal growth of the plant, hence the length of the sugarcane keep on increasing.

27. A nail is inserted in the trunk of a tree at a height of 1 metre from the ground level. After 3 years the nail will

(a) move downwards

(b) move upwards

(c) remain at the same position

(d) move sideways

Answer is (c) remain at the same position

Longitudinal growth in the stem always takes place on the top hence apical meristem in the below region remains constant, hence there will be no change in position of nail inserted in the trunk of the tree.

28. Parenchyma cells are

(a) relatively unspecified and thin-walled

(b) thick-walled and specialised

(c) lignified

(d) none of these

Answer is (a) relatively unspecified and thin-walled.

Parenchyma is the most common simple permanent tissue. It consists of relatively unspecialised cells with thin cell walls. They are living cells. They are usually loosely arranged, thus large spaces between cells (intercellular spaces) are found in this tissue.

29. Flexibility in plants is due to

(b) sclerenchyma

(d) chlorenchyma

Answer is (d) collenchyma

The flexibility in plants is due to collenchyma. Collenchyma allows bending of various parts of a plant-like tendrils and stems of climbers without breaking. It also provides mechanical support. Collenchyma is found in leaf stalks below the epidermis.

30. Cork cells are made impervious to water and gases by the presence of

(a) cellulose

(c) suberin

Answer is (c) suberin

31. Survival of plants in the terrestrial environment has been made possible by the presence of

(a) intercalary meristem

(b) conducting tissue

(c) apical meristem

(d) parenchymatous tissue

Answer is (b) conducting tissue

Conducting tissues xylem and phloem are responsible for the survival of plants in the terrestrial environment. Xylem conduct water from roots to all the parts of the plants and phloem transports food and other nutrients from leaves to other parts of the plant.

32. Choose the wrong statement

(a) The nature of matrix differs according to the function of the tissue

(b) Fats are stored below the skin and in between the internal organs

(c) Epithelial tissues have intercellular spaces between them

(d) Cells of striated muscles are multinucleate and unbranched

Answer is (c) Epithelial tissues have intercellular spaces between them

Epithelial tissues do not have intercellular spaces between them rather they are tightly bound together to make a continuous sheet.

33. The water conducting tissue generally present in gymnosperm is

(a) vessels

(b) sieve tube

(c) tracheids

(d) xylem fibres

Answer is (c) tracheids

Vessels are generally absent in Gymnosperms

Sieve tubes are present in phloem hence they have no role in conduction of water

Xylem fibres provide structural rigidity and they have no role in conduction of water.

Short Answer Questions

34. Animals of colder regions and fishes of cold water have thicker layer of subcutaneous fat. Describe why?

Animals of colder regions and fishes of cold water have a thicker layer of subcutaneous fat because fats act as an insulator and prevent the escape of heat from their body. This will help the animals in resisting low temperature in cold climates.

35. Match the column (A) with the column (B)

(A) – (B)

(a) Fluid connective tissue – (i) Subcutaneous layer

(b) Filling of space inside the organs – (ii) Cartilage

(c) Striated muscle – (iii) Skeletal muscle

(d) Adipose tissue – (iv) Areolar tissue

(e) Surface of joints – (v) Blood

(f) Stratified squamous epithelium – (vi) Ski

(a) Fluid connective tissue – (v) Blood

(b) Filling of space inside the organs – (iv) Areolar tissue

(d) Adipose tissue – (i) Subcutaneous layer

(e) Surface of joints – (ii) Cartilage

36. Match the column (A) with the column (B)

(a) Parenchyma – (i) Thin-walled, packing cells

(b) Photosynthesis – (ii) Carbon fixation

(c) Aerenchyma – (iii) Localized thickenings

(d) Collenchyma – (iv) Buoyancy

(e) Permanent tissue – (v) Sclerenchyma

(c) Aerenchyma – (iv) Buoyancy

(d) Collenchyma – (iii) Localized thickenings

37. If a potted plant is covered with a glass jar, water vapours appear on the wall of glass jar. Explain why?

Because of a process called transpiration, the water is released from the plants in the form of vapours. These vapours appear on the glass jar if a potted plant is covered with the glass jar.

38. Name the different components of xylem and draw a living component?

Xylem comprises tracheids, vessels, xylem parenchyma and xylem fibres. The only living component of xylem is xylem parenchyma.

39. Draw and identify different elements of phloem.

40. Write true (T) or false (F)

(a) Epithelial tissue is protective tissue in animal body.

(b) The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.

(c) Epithelial cells have a lot of intercellular spaces.

(d) Epithelial layer is permeable layer.

(e) Epithelial layer does not allow regulation of materials between body and external environment.

c. Epithelial cells have a lot of intercellular spaces

41. Differentiate between voluntary and involuntary muscles. Give one example of each type.

42. Differentiate the following activities on the basis of voluntary (V) or involuntary (I V) muscles.

(a) Jumping of frog

(b) Pumping of the heart

(c) Writing with hand

(d) Movement of chocolate in your intestine

a-v, b-iv, c-v, d-iv

(a) Jumping of frog – is an activity of voluntary muscles

(b) Pumping of the heart- is a function of involuntary muscles

(c) Writing with hand- is a function of voluntary muscles

(d) Movement of chocolate in your intestine- is a function of involuntary muscles

43. Fill in the blanks

(a) Lining of blood vessels is made up of———.

(b) Lining of small intestine is made up of ———.

(c) Lining of kidney tubules is made up of———.

(d) Epithelial cells with cilia are found in———of our body

a. Lining of blood vessels is made up of squamous epithelium

b. Lining of small intestine is made up of columnar epithelium

c. Lining of kidney tubules is made up of cuboidal epithelium

d. Epithelial cells with cilia are found in respiratory tract of our body

44. Water hyacinth float on water surface. Explain.

Water hyacinth float on the water surface because of the presence of the air cavities present in the parenchyma tissue.

45. Which structure protects the plant body against the invasion of parasites?

The epidermis is the structure that protects the plant body against the invasion of parasites. It has thick cuticle and dermal tissue which help in preventing the attack from parasites.

46. Fill in the blanks

(a) Cork cells possesses———on their walls that makes it impervious to gases and water.

(b) ——— have tubular cells with perforated walls and are living in nature.

(c) Bone possesses a hard matrix composed of———and ———.

(a) Cork cells possesses Suberin on their walls that makes it impervious to gases and water.

(b) Sieve tubes have tubular cells with perforated walls and are living in nature.

(c) Bone possesses a hard matrix composed of calcium and Phosphorus.

47. Why is epidermis important for the plants?

The epidermis is important for it gives protection against water loss. Epidermal cell present on the aerial parts of the plant often secretes a waxy, water-resistant layer on their outer surface. This provides protection against loss of water, mechanical injury and invasion by parasitic fungi. Epidermal tissue forms a continuous layer which helps to avoid mechanical stress.

48. Fill in the blanks (a) ———are forms of complex tissue. (b) ———have guard cells. (c) Cells of cork contain a chemical called——— (d) Husk of coconut is made of ———tissue. (e) ———gives flexibility in plants. (f) ———and———are both conducting tissues. (g) Xylem transports———and———from soil. (h) Phloem transport———from———to other parts of the plant

a. Xylem and Phloem

d. Sclenchyma

e. Collenchyma

f. Xylem;Phloem

g. Water and minerals

h. Food, leaf

Long Answer Questions

49. Differentiate between sclerenchyma and parenchyma tissues. Draw well labelled diagram.

50. Describe the structure and function of different types of epithelial tissues. Draw diagram of each type of epithelial tissue.

Epithelial cells are the thin protective coverings that line most organs and cavities within the body. It also forms a barrier to keep different body systems separate. The skin, the lining of the mouth, the lining of blood vessels, lung alveoli and kidney tubules are all made of epithelial tissue. Epithelial tissue cells are tightly packed and form a continuous sheet.

They have only a small amount of cementing material between them and almost no intercellular spaces.

Obviously, anything entering or leaving the body must cross at least one layer of epithelium. As a result, the permeability of the cells of various epithelia plays an important role in regulating the exchange of materials between the body and the external environment and also between different parts of the body. Regardless of the type, all epithelium is usually separated from the underlying tissue by an extracellular fibrous basement membrane.

Epithelial cells are the protective coverings that line most organs and cavities of our body. Epithelial cells form a barrier that keeps different body systems separate. Skin, the lining of blood vessels, alveoli of the lung, kidney tubules etc are made of epithelial tissue. Cells in the epithelial tissue are tightly packed and form a continuous sheet.

Epithelial tissue has only a small amount of cementing material between them and almost no intercellular spaces. It is obvious that anything entering or leaving the body must cross at least one layer of epithelium. This results in the permeability of the cells of various epithelia to play an important role in regulating the exchange of materials between the body and the external environment and between different parts of the body.

The epithelium is usually separated from the underlying tissue by an extracellular fibrous basement membrane.

Depending on the shape and function, epithelial cells are classified into a) Squamous epithelial tissue b) Stratified squamous epithelial tissue c) Cuboidal epithelial tissue d) Columnar( Ciliated) epithelial tissue.

a) Squamous epithelial tissue:

In cells lining blood vessels or lung alveoli transportation of substances occurs through a selectively permeable surface, this epithelium is a flat kind of epithelium. This is called the simple squamous epithelium. Simple squamous epithelial cells are extremely thin and flat and form a delicate lining. The oesophagus and the lining of the mouth are also covered with squamous epithelium. The skin, which protects the body, is also made of squamous epithelium. Skin epithelial cells are arranged in many layers to prevent wear and tear. Since they are arranged in a pattern of layers, the epithelium is called stratified squamous epithelium.

b) Stratified squamous epithelium:  Skin epithelial cells are arranged in many layers to prevent wear and tear. Since they are arranged in a pattern of layers, the epithelium is called stratified squamous epithelium.

c) Columnar epithelium:  Where absorption and secretion occur, as, in the inner lining of the intestine, these tall epithelial cells are present. This columnar epithelial facilitates movement across the epithelial barrier. In the respiratory tract, the columnar epithelial tissue also has cilia, which are hair-like projections on the outer surfaces of epithelial cells. These cilia can move and their movement pushes the mucus forward to clear it. This type of epithelium is thus ciliated columnar epithelium.

d) Cuboidal epithelium:  These form the lining of the kidney tubules and ducts of salivary glands where these provide mechanical support. Sometimes, a portion of the epithelial tissue folds inward and a multicellular gland is formed. This is the glandular epithelium.

51. Draw well labelled diagrams of various types of muscles found in human body.

52. Give reasons for

(a) Meristematic cells have a prominent nucleus and dense cytoplasm but they lack vacuole.

(b) Intercellular spaces are absent in sclerenchymatous tissues.

(c) We get a crunchy and granular feeling, when we chew pear fruit.

(d) Branches of a tree move and bend freely in high wind velocity.

(e) It is difficult to pull out the husk of a coconut tree.

a) Meristamatic tissue cells are continuously dividing and they have a prominent nucleus and a dese cytoplasm. Since they are diving rigorously they need not store food or waste products hence they lack vacuoles.

b) Cellwall of sclerenchyma are lignified and are packed densely to protect the plant and to give mechanical strength hence intercellular spaces are absent in sclerenchymatous tissues.

c) In pear fruit sclerenchyma cells are called stone cells. They are small, thick and hard. Due to this, we get a crunchy and granular feeling, when we chew pear fruit.

d) Junction of the tree branch composed of collenchyma cells which provide rigidity and flexibility to the branches. Hence, branches of a tree move and bend freely in high wind velocity.

e) Husk of coconut tree is sclerenchyma which is hard. Hence it is difficult to pull out the husk of a coconut tree.

53. List the characteristics of cork. How are they formed? Mention their role.

• Cork cells are mature and dead
• They are compactly arranged
• They do not have intercellular spaces
• They are thick and have several layers.

Outer protective tissue of the plant undergoes changes with age. The epidermis of the stem is replaced by a secondary meristem call phellogen or cork cambium .It is a simple tissue which consists of rectangular cells whose protoplasts are vacuolated. Cork cells contain tannins and chloroplasts.

Cork cambium forms cork on the outer side and secondary cortex on the inner side by giving off new cells on both its sides. The layer of cells which is cut by cork cambium on the outer side ultimately becomes several layered thick cork (bark) of trees.

Cork cells are compactly arranged dead cells and they lack intercellular spaces. Walls of cork cells are thickened with suberin which is fat. Due to Suberin, these cells are impermeable to water and gases.

Role of cork

Cork provides protection to plant and it prevents loss of water from plant body. Cork protects the plants from infection and mechanical injury. Cork is light in weight and it cannot catch fire. Because of this property, it is used as insulators. Cork is hard in nature hence it is used to make sports goods.

54. Why are xylem and phloem called complex tissues? How are they different from one other?

A complex tissue is the one which has more than one type of cells having a common origin which coordinates to perform a common function.

Xylem and phloem are made of different types of cells hence they are called complex tissues.

Xylem is made up of four different types of cells (elements), namely

(i)tracheids- Tracheids are elongated cells in the xylem of vascular plants that serve in the transport of water and mineral salts.

(ii)vessels- A vessel element (trachea) is one of the cell types found in xylem, the water-conducting tissue of plants. Vessel elements are found in flowering plants

(iii) xylem parenchyma- xylem parenchyma. live plant cells that are short, lignified and generally thin-walled. They surround conducting elements and assist directly or indirectly in the conduction of water upwards through vessels and tracheids, and also serve for food storage.

(iv) xylem sclerenchyma (or fibre)- Xylem fibres are mainly supportive in function.

Phloem is also made of four different types of elements

(i) sieve tubes- Sieve tube, in flowering plants, elongated living cells (sieve-tube elements) of the phloem, the nuclei of which have fragmented and disappeared and the transverse end walls of which are pierced by sievelike groups of pores (sieve plates). They are the channels of food (mostly sugar) transport.

(ii) companion cells- companion cell A type of cell found within the phloem of flowering plants. Companion cell is usually closely associated with a sieve element. Its function is uncertain, though it appears to regulate the activity of the adjacent sieve element and to take part in loading and unloading sugar into the sieve element.

(iii) phloem parenchyma

(iv) phloem fibre

55. (a) Differentiate between meristematic and permanent tissues in plants (b) Define the process of differentiation. Name any two simple and two complex permanent tissues in plants.

The basic differences between meristematic and permanent tissues of plants are tabulated below

(b) Cells derived from the division of meristematic tissues take up specific roles and gradually lose their ability to divide. Thus, they form permanent tissue. Differentiation is a process by which the cells divide meristematically to take a permanent shape, size and function

(c) Parenchyma and collenchyma are two simple permanent tissues, whereas xylem and phloem are two complex permanent tissues.

Important topics of NCERT Exemplar for Class 9 Science Chapter 6 Tissues

• Plant Tissues
• Meristematic tissue
• Permanent tissue
• Animal Tissues (3.1) Epithelial Tissue (3.2) Connective tissue (3.3) Muscular Tissue (3.4) Nervous Tissue

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Frequently Asked Questions on NCERT Exemplar Solutions for Class 9 Science Chapter 6

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NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12

NCERT Solutions For Class 9 Science Chapter 6 Tissues

NCERT Solutions Class 9 Science Chapter 6 Tissues – Here are all the NCERT solutions for Class 9 Science Chapter 6. This solution contains questions, answers, images, step by step explanations of the complete Chapter 6 titled Tissues of Science taught in class 9. If you are a student of class 9 who is using NCERT Textbook to study Science, then you must come across Chapter 6 Tissues. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 9 Science Chapter 6 Tissues in one place. For a better understanding of this chapter, you should also see Chapter 6 Tissues Class 9 notes , Science.

Topics and Sub Topics in Class 9 Science Chapter 6 Tissues:

• Are Plants and Animals Made of Same Types of Tissues?
• Plant Tissues
• Animal Tissues

These solutions are part of NCERT Solutions for Class 9 Science . Here we have given Class 9 NCERT Science Textbook Solutions for Chapter 6 Tissues.

IN-TEXT QUESTIONS SOLVED

NCERT Textbook for Class 9 Science – Page 69

Question 1. What is a tissue? Answer:  A group of cells that are similar in structure and work together to do a peculiar function is called tissue.

More Resources for CBSE Class 9

NCERT Solutions

• NCERT Solutions Class 9 Maths
• NCERT Solutions Class 9 Social Science
• NCERT Solutions Class 9 English
• NCERT Solutions Class 9 Hindi
• NCERT Solutions Class 9 Sanskrit
• NCERT Solutions Class 9 IT
• RD Sharma Class 9 Solutions

Question 2. What is the utility of tissues in multicellular organisms? Answer:  Tissues provide structural strength, mechanical strength, show division of labour.

Formulae Handbook for Class 9 Maths and Science Educational Loans in India

Class 9 Science NCERT Textbook – Page 74

Question 1. Name types of simple tissues. Answer:  The types of simple tissues are parenchyma, collenchyma, sclerenchyma and aerenchyma.

Question 2. Where is apical meristem found? Answer:  Apical meristem is found at the tip of root or shoot of the plant.

Question 3. Which tissue makes up the husk of coconut? Answer:  The husk of coconut is made of sclerenchymatous tissue.

Question 4. What are the constituents of phloem? Answer:  Phloem is made up of four types of elements sieve tube, companion cells, phloem fibres and phloem parenchyma.

Class 9 Science NCERT Textbook – Page 78

Question 1. Name the tissue responsible for movement in our body. Answer:  1. Muscular tissue, 2. Nervous tissue, combination of both the tissues are responsible for movement in our body.

Question 3. Give three features of cardiac muscles. Answer:  Feature of cardiac muscles (1) Heart muscles (cardiac muscles) are cylindrical, branched and uninucleated (2) They are striated muscle fibres. (3) They are involuntary muscles, cannot be controlled by us.

Question 4. What are the Junctions of areolar tissue? Answer:  Areolar tissue are connective tissues found in animal. It is found between skin and muscles, around blood vessels and nerves and in the bone marrow. It fills the space inside the organs, supports internal organs and helps in the repair of tissues.

Questions From NCERT Textbook for Class 9 Science

Question 1. Define the term “tissue”. Answer:  Group of cells that are similar in structure and perform same function is called a tissue.

Question 2. How many types of elements together make up the xylem tissue? Name them. Answer:  The xylem is made up of vessels, trachieds, xylem fibres and xylem parenchyma.

Question 3. How are simple tissues different from complex tissues in plants? Answer:  Simple tissues are made up of one type of cells which coordinate to perform a common function. Complex tissues are made up of more than one type of cells. All these coordinate to perform a common function.

Question 4. Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall.  Answer:  Parenchyma: The cells have thin cell walls made up of cellulose. Collenchyma: The cells have cell walls thickened at the comers due to pectin deposition. Sclerenchyma: Their walls are thickened due to lignin deposition.

Question 5. What are the functions of stomata? Answer:  The outermost layer of the cell is called epidermis and is very porous. These pores are called stomata. These stomata help in transpiration and exchange of gases.

Question 7. What is the specific function of the cardiac muscle? Answer:  (1) Cardiac muscles cells are cylindrical, branched and uninucleated. (2) They are involuntary muscles. (3) They show rhythmically contraction and relaxation throughout life. (4) Their rhythmic contraction and relaxation helps in pumping action of heart.

Question 10. Name the following: (1) Tissue that forms the inner lining of our mouth. (2) Tissue that connect muscle to bone in humans. (3) Tissue that trar-carts food in plants. (4) Tissue that siwea j’ut in our body. (5) Connective tissue with a fluid matrix. (6) Tissue present in the brain. Answer:  (1) Squamous epithelium (2) Tendons (3) Phloem (4) Areolar tissue (5) Blood (6) Nervous tissue

Question 11. Identify the type of tissue in the following: Skin, bark of tree, bone, lining of kidney tubule, vascular bundle. Answer:  (a) Skin—Striated squamous epithelium (b) Bark of tree—Cork, protective tissue (c) Bone—Connective tissue (d) Lining of kidney tubule—Cuboidal epithelium tisse (e) Vascular bundle—Conducting tissue

Question 12. Name the regions in which parenchyma tissue is present. Answer:  In the pith of the roots and stems. When it contains chlorophyll, it is called chlorenchyma, found in green leaves. In aquatic plants, parenchyma contains large air cavities and help them to float. Such type of parenchyma is called aerenchyma.

Question 13. What is the role of epidermis in plants? Answer:  Cells of epidermis forms a continuous layer without intercellular spaces. It protects all the parts of plants.

Question 14. How does the cork act as a protective tissue? Answer:  Cork acts as a protective tissue because its cells are dead and compactly arranged without intercellular spaces. They have deposition of suberin on the walls that make them impervious to gases and water.

NCERT Solutions for Class 9 Science Chapter 6 Tissues (Hindi Medium)

MORE QUESTIONS SOLVED

NCERT Solutions for Class 9 Science Chapter 6  Multiple Choice Questions Choose the correct option: 1. The cells of cork are dead and have a chemical in their walls that makes them impervious to gases and water. The chemical is (a) lignin (b) suberin (c) cutin (d) wax 2. The flexibility in plants is due to a tissue called, (a) chlorenchyma (b) parenchyma (c) sclerenchyma (d) collenchyma 3. The tissue present in the lining of kidney tubules and ducts of salivary glands is (a) squamous epithelium tissue (b) glandular epithelium tissue (4 cuboidal epithelium tissue (d) columnar epithelium tissue 4. The connective tissue that connects muscle to bone is called (a) ligament (b) tendon (d) cartilage (d) areolar 5. The tissue that helps in the movement of our body are (a) muscular tissue (b) skeletal tissue (c) nervous tissue (d) all of the above 6. Monocyte, basophil, eosinophil and neutrophil are the examples of different types of (a) red blood cells (b) white blood cells (c) areolar tissue (d) compact bone 7. The spindle shaped cells, uninucleated and unbranched are present in muscular tissue of  (a) striated muscles (b) smooth muscles (c) cardiac muscle (d) both (a) and (b) 8. Sieve tubes and companion cells are present in (a) xylem (b) phloem (c) cork (d) cambium 9. The size of the stem increases in the width due to (a) apical meristem (b) intercalary meristem (c) primary meristem (d) lateral meristem 10. Blood and lymph are types of (a) muscular tissue (b) epithelial tissue (c) connective tissue (d) permanent tissue 11. Cartilage and bone are types of (a) muscular tissue (b) connective tissue (c) meristematic tissue (d) epithelial tissue 12. Xylem and phloem are examples of (a) epidermal tissue (b) simple tissue (c) protective tissue (d) complex tissue 13. A tissue whose cells are capable of dividing and re-dividing is called (a) complex tissue (b) connective tissue (c) protective tissue (d) meristematic tissue 14. The tissue that helps in the secretion and absorption and is found in the inner lining of the alimentary canal is (a) ciliated epithelium (b) cuboidal epithelium (c) squamous epithelium (d) columnar epithelium Answer:  1—(b), 2—(d), 3—(c), 4—(b), 5—(d), 6—(b), 7—(b), 8—(b), 9—(d), 10—(c),11—(b), 12—(d), 13—(d), 14—(d).

Ncert solutions for class 9 science chapter 6 very short answer type questions.

Question 1. Name the tissues responsible for the movement of the body. Answer:  Muscle tissue and nervous tissue

Question 2. How does neuron look like? Answer:  A neuron is the unit cell of nervous tissue. It is a thread-like structure with cell body and axon.

Question 3. Name the types of simple tissues. Answer:  (a) Parenchyma (b) Collenchyma (c) Sclerenchyma

Question 4. Name the types of complex tissues. Answer:  Xylem and phloem.

Question 5. Where is apical meristem found? . Answer:  It is present at the growing tips of stem and root, it increases the length of the stem and roots.

Question 6. Which tissue make up the husk of coconut? Answer:  Sclerenchyma.

Question 7. What are the constituents of phloem? Answer:  Phloem constitutes the sieve tubes, companion cell, phloem parenchyma and phloem fibres.

Question 8. Define aerenchyma. Answer:  When the cells have air-filled large cavities of parenchyma, it is called aerenchyma. Aerenchyma helps aquatic plants in floating.

Question 9. What is the utility of tissues in multicellular organisms? Answer:  It helps in growth, organisation of different organs and performing functions.

Question 10. Name the two types of tissues. Answer:  Plant tissues and animal tissues.

Question 11. Name the two types of plant tissue. Answer:  Meristematic tissue and permanent tissue.

Question 12. What is differentiation? Answer:  The process of taking up a permanent shape, size and function by cells is called differentiation.

Question 13. Name the three types of meristematic tissues. Answer:  The three types are: (a) Apical tissue—tips of root and shoot (b) Lateral tissue—sides of stem (c) Intercalary tissue—at nodes

Question 14. Where is apical tissue found? Answer:  Present at the tips of roots and stems.

Question 15. Tissues present at the lateral surface of the stem are called apical tissues. Put (T) if true and put (F) if false. Rewrite the answer if (F). Answer:  (F). Tissues present at the lateral surface of the stem are called lateral tissue.

Question 16. Which tissues are present at the nodes of the plants? Answer:  Intercalary tissue.

Question 17. What are the various types of blood cells? Answer:  There are three types: (a) RBC’s (b) WBC’s and (c) Platelets.

Question 18. What are tracheids? Answer:  They are elongated cells with tapering ends.

Question 19. What are guard cells? Answer:  Each stomata is bounded by a pair of specialised kidney-shaped epidermal cells called guard cells.

Question 20. Epithelial tissue is the simplest tissue. Write (F) for false or (T) for true. Answer:  (T).

Question 21. What are the functions of cuboidal epithelium? Answer:  It helps in absorption, excretion, secretion, it also provides mechanical support.

NCERT Solutions for Class 9 Science Chapter 6 Short Answer Type Questions

Question 2. Give the functions of bone. Answer:  The functions of bone are: (i) It provides shape to the body. (ii) It provides skeletal support to the body. (iii) It anchors the muscles. (iv) It protects the vital body organs like brain, lungs, etc.

Question 3. Give the functions of cartilage. . Answer:  (i) It provides support and flexibility to the body parts. (ii) It smoothens surface at joints.

Question 4. Fill in the blanks: (i) Water and minerals are conducted by …………………. (ii) In higher plants food is conducted by …………………….. (iii) Blood is a ……………. tissue. (iv) Bone consists of………….cells. (v) Cartilage consists of………………..cells. (vi) Fibres are absent in………….type of connective tissue. Answer:  (i) Xylem (ii) Phloem (iii) Connective (iv) Osteocyte (v) Chondrocyte (vi) Blood

Question 5. What are the functions of areolar tissue? Answer:  Functions are: (i) It helps in repair of tissues after an injury. (ii) It also helps in combating foreign toxins. (iii) It fixes skin to underlying muscles.

Question 8. Name the tissues for the following: (a) Stores fat in animal body. (b) Divides and re-divides to grow in plants. (c) Tissue that joins hone to hone. (d) Covers the external surface of animal body. Answer:  (a) Adipose tissue (b) Meristematic tissue . (c) Ligament (d) Epithelial tissue.

Question 9. What is stomata? Answer:  Stomata are small pores present on the surface of a leaf which helps in the exchange of gases and in transpiration.

Question 10. Why does epidermal tissue have no intercellular space? Answer:  The epidermal (layer) tissue forms a protective outer covering for the plants and it protects the internal parts of the plant. It aid in the protection against loss of water, mechanical injury and invasion by parasitic fungi. For this protective role to play the continuation of cells is necessary, hence it does not have intercellular space.

Question 11. Name and give the function of each cell of xylem:. Answer:  Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres. Tracheids and vessels—Allows the transport of water and minerals. Xylem parenchyma—Stores food and helps in the sideways conduction of water. Xylem fibres—Are supportive in function.

Question 12. What is the function and location of stratified squamous epithelium? Answer:  Stratified squamous epithelium is present in the skin. The layers of cells are arranged to prevent wear and tear.

Question 16. Name all different types of tissues present in animal. Answer:  There are four main types of tissues present in animal. ‘ (a) Epithelial tissue present on the outer and inner lining of the body. (b) Muscular tissue are made up of muscles, help in movement. (c) Connective tissue connects the different organs in the body. (d) Nervous tissue consists of nerve cells and are present in the nervous system.

Question   17. Why is blood called connective tissue? Answer:  The blood is composed of cells and plasma. Plasma is a fluid and cells like red blood cells, white blood cells and platelets are present in it. All these cells are connected due to plasma. It also transports food, water to different parts of the body and connects them.

Question 18. Name three types of muscle tissues and give function of each. Answer:  Three types of muscle tissues are: (a) Striated muscle (b) Smooth muscle (c) Cardiac muscle (a) Striated muscle: These muscles show alternate light and dark bands or striations. They are involuntary and present in skeletal tissues,, help in movement of body and bones. (b) Smooth muscle: These are involuntary muscles, control the movement of food in alimentary canal, contraction and relaxation of blood vessels. Present in iris, uterus etc. (c) Cardiac muscle: These muscles are present in heart, help in the rhythmic contraction and relaxation throughout the life.

Question 22. Explain the structure, function and location of nervous tissue. Answer:  Structure: Nervous tissue consists of cells called nerve cells joined end to end (neurons). A neuron (nerve cell) consists of a cell body with nucleus and cytoplasm. From these cell body a long thin hair-like parts arise called axon and many short branched parts called dendrites. Location: Nervous tissue are present in brain, spinal cord and nerves. Function: Nervous tissue receives the stimuli and transmit the stimulus rapidly from one place to another within the body. The nerve impulse allows us to move our muscles and respond to any stimuli.

NCERT Solutions for Class 9 Science Chapter 6 Long Answer Type Questions

Question 4.Describe ‘epidermis’ in plants. Answer:  Epidermis forms the entire outermost layer of the plant. It is made up of single cell layer. It protects all the internal parts of the plant. On aerial parts, epidermis secretes waxy, water-resistant layer on their outer surface. This helps in protection against loss of water, mechanical injury and invasion of parasitic fungi. In leaves, epidermis consists of small pores called stomata. These pores helps in the transpiration and exchange of gases, like oxygen and carbon dioxide for plants. In roots, epidermis have long hair-like parts that provide greater surface for water absorption. In desert plants, epidermis has a thick waxy coating of cutin which acts as a water proofing agent.

Question 5. Explain the “complex tissue” of plants. Answer:  Complex tissues are made up of more than one type of cells. All these cells co-ordinate to perform common function. These are—xylem and phloem. Both are conducting tissues and form a vascular bundle. Xylem consists of—tracheids, vessels, xylem parenchyma and xylem fibres. Most of these cells are dead. Tracheids and vessels helps in water transportation, parenchyma stores food and helps in the sideways conduction of water and fibres are mainly supportive in function. Phloem is made up of four types of elements—sieve tubes, companion cells, phloem fibres and phloem parenchyma. It helps in the transportation of food in both the directions, i.e. from leaves to roots and to other parts of the plant.

NCERT Solutions for Class 9 Science Chapter 6 Activity-Based Questions

NCERT Solutions for Class 9 Science Chapter 6 Value-Based Questions

Question 1. A group of students completed the project of finding the botanical names of all the trees present in the school campus. They prepared metal plates with names carved on it, to fix it on the plant trunks. Shreya was concerned that if the metal plate is fixed into tree many cells of the tree may get damaged. But the group members explained her that the outer layer of trunk does not have living cells and there won’t be any damage to the tree. (a) What type of cells are present on the outer layer of the bark/tree trunk? (b) How does the cprk act as a protective tissue? (c) What value of the group is seen in the above cast? Answer:  (a) On the outer layer of the tree trunk/bark all thick layer of dead cells is present which acts as protective tissue. (b) In cork, all cells are dead without intercellular spaces, the walls of the cells have deposition of suberin. (c) The students in a group show team effort, peer learning and co-operatiye.

Question 2. A paralytic patient was unable to walk. ‘The family member of the patient took the outmost care of the patient. (a) Name two tissues responsible for the movement of a body. (b) Name the tissues present in brain and spine. (c) What value of the family members is seen in the above case? Answer:  (a) The two tissues responsible for movement of the body are muscular tissue and nervous tissue. (b) The tissues present in brain and spine are nervous tissues. (c) The family members showed the value of being caring, responsible, dutiful and kind.

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Test: Tissues- Case Based Type Questions- 2 - Class 9 MCQ

10 questions mcq test - test: tissues- case based type questions- 2.

Direction: Sunil while playing football with his friends got injured suddenly. His friends took him to the hospital and the doctor told that he was suffering from a sprain and advised bed rest. Every afternoon, his friends visited him to enquire about his health. Q. During a sprain, which type of tissue are stresses?

• B. Ligaments
• D. Connective tissues

Direction: Sunil while playing football with his friends got injured suddenly. His friends took him to the hospital and the doctor told that he was suffering from a sprain and advised bed rest. Every afternoon, his friends visited him to enquire about his health. Q. Dislocation of bones is due to ________

• A. Damage of nervous tissues
• B. Breakage of ligaments
• C. Breakage of Bones
• D. None of these

Dislocations also occur during regular activities when the muscles and tendons surrounding the joint are weak.

Direction: Study the given diagram and answer the following questions. Q. Vascular bundles are :

• A. Only Xylem
• B. Only Phloem
• C. Only Cortex
• D. Both Xylem and Phloem

Direction: Study the given diagram and answer the following questions.

Q. What will happen if Phloem at the base of the branch is removed?

• A. Plant will die
• B. Lower parts of the plants wilted.
• C. No change occur

Q. Name the tissue shown in the diagram.

• C. Epidermis

Q. Identify the parts A,B,C and D.

• A. A - Companion cell, B - Sieve tube, C - Sieve plate, D - Phloem parenchyma
• B. A - Phloem Parenchyma , B - Companion cell, C - Sieve tube, D - Sieve plate
• C. A - Sieve plate, B - Sieve tube, C - Phloem parenchyma D - Companion cell
• D. A - Sieve tube, B - Phloem parenchyma, C - Sieve plate, D - Companion cell

Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells .

Direction: Study the given descriptions and answer the following questions.

Tissue ‘A’–Repairs the injured tissues and fills spaces within organs.

Tissue ‘B’–Serves as a fat reservoir and also carries out the function of insulator.

Q. Muscular tissues that functions throughout life without fatigue :

• A. Striated muscles
• B. Smooth muscles
• C. Cardiac muscles

Q. Specialised connective tissue consist of lipid rich cells ______

• A. Adipose tissue
• B. Areolar tissue
• C. Muscular

Q. Identify the animal tissue from the given description :

• A. A - Adipose tissue , B - Areolar tissue
• B. A - Muscular tissue , B - Adipose tissue
• C. A - Areolar tissue, B - Muscular tissue
• D. A - Areolar tissue, B -Adipose tissue

(B) The adipose tissue is found beneath the skin, in the covering of the heart, around the blood vessels and kidneys and in yellow bone marrow.

Q. The fibres present in areolar tissue are :

• A. Collagen
• C. Reticular
• D. All of these

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Important Questions for Tissues- Case Based Type Questions- 2

Tissues- case based type questions- 2 mcqs with answers, online tests for tissues- case based type questions- 2.

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Extra Questions for Class 9th: Ch 6 Tissues Science

Extra questions for class 9th: ch 6 tissues (science) important questions answer included.

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• CBSE-Tissues
• Sample Questions

Tissues-Sample Questions

• STUDY MATERIAL FOR CBSE CLASS 9 BIOLOGY
• Chapter 1 - Diversity in Living Organisms
• Chapter 2 - Improvement in Food Resources
• Chapter 3 - Natural Resources
• Chapter 4 - Why do we fall ill
• Chapter 5 - The Fundamental Unit of Life
• Chapter 6 - Tissues