NCERT Solutions For Class 9 Science Chapter 6 - Tissues

Download Class 9 Science Chapter 6 Tissues Solutions PDF

Students can download the complete questions with detailed answers for better learning. The PDF of the Class 9 Science Chapter 6 Tissues question answer can be accessed offline without needing the internet. All the answers in the NCERT Solutions for Class 9 are presented in easy and simple language.

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Also Read

• NCERT Notes for Class 9 Science: Tissues

• NCERT Exemplar for Class 9 Science Tissues

Access the Class 9 Science Chapter 6 Tissues Solutions

The detailed answers to all the questions in this chapter are given below. Students learn about the different types of tissues in plants and animals and what role they play. Doing regular practice of Class 9 Science Chapter 6 Tissues question answer is important to score well.

Topic 6.1 Are Plants and Animals Made of the Same Types of Tissues?

Ques 1. What is a tissue?

Answer:

A group of cells that are similar in structure and cooperate to carry out a specific function is referred to as a tissue.

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

Answer:

In multicellular organisms, tissues help in the functioning of the body by organizing cells into groups that perform specific functions, such as support, movement, transport, and protection.

Topic 6.2 Plant Tissues

Ques 1. Name types of simple tissues.

Answer:

Simple permanent tissues are of three types:

(i) Parenchyma, (ii) Collenchyma, and (iii) Sclerenchyma.

Parenchyma tissue can be further divided into two types:

(a) aerenchyma and (b) chlorenchyma.

Ques 2. Where is the apical meristem found?

Answer:

The apical meristem is found at the growing tips of roots and shoots of plants. Its main function is to increase the length of the stem and root by initiating the growth of new cells.

Ques 3. Which tissue makes up the husk of a coconut?

Answer:

• The husk of a coconut is made up of sclerenchyma tissue. It is a permanent tissue whose cells are dead.

• They are long and narrow, as the walls are thickened due to lignin. This tissue makes the husk hard and thick.

Ques 4. What are the constituents of the phloem?

Answer:

The phloem is a conducting or vascular tissue of plants that transports food from leaves to other parts of the plant. The phloem is made up of four types of elements:

(i) sieve tubes, (ii) companion cells, (iii) phloem fibers, and (iv) phloem parenchyma.

Out of these four, only phloem fibers are dead cells.

Topic 6.3 Animal Tissues

Ques 1. Name the tissue responsible for movement in our body.

Answer:

• The muscular tissue is responsible for movement in our bodies.

• Muscular tissue consists of muscle fibres, which are elongated cells. The movement is caused when these muscles contract and relax.

Ques 2. What does a neuron look like?

Answer:

• Neurons or nerve cells are the structural and functional unit of the nervous tissue. The brain, spinal cord, and nerves are all composed of nervous tissue.

• A neuron consists of a cell body with a nucleus and cytoplasm, from which long, thin, hair-like parts arise. Each neuron consists of axons, a single long part (process), and dendrites, which are the short, branched parts (processes).

• The axon transmits impulses away from the cell body, whereas the dendrite receives nerve impulses from other nerve cells or external stimuli.

Ques 3. Give three features of cardiac muscles.

Answer:

The heart, which pumps blood throughout the body, is made up of cardiac muscles. Three features of cardiac muscle are:

(i) Cardiac muscles are involuntary. They cannot be controlled by will.

(ii) Cardiac muscle cells are cylindrical, branched, and uninucleate.

(iii) Cardiac muscles show rhythmic contraction and relaxation throughout life.

Ques 4. What are the functions of areolar tissue?

Answer:

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

Class 9 Science Chapter 6 Tissues Solutions (Chapter-end Exercise)

Students must practice with the solved exercises to get a good grip of concepts. The detailed exercise question answers are given below:

Ques 1. Define the term “tissue”.

Answer:

A tissue is a group of cells that are similar in structure and perform the same function.

For example, Blood, phloem, and muscles.

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

Answer:

Xylem transports water and minerals vertically from the roots to various parts of the plant. Xylem tissue consists of four different types of cells:

(i) Tracheids (ii) Vessels (iii) Xylem Parenchyma (iv) Xylem fibres

Out of these four, only Xylem Parenchyma is a living cell.

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

Answer:

Simple tissues are different from complex tissues in plants in the following ways.

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

Answer:

Ques 5. What are the functions of the stomata?

Answer:

Stomata are the small pores on the surface of the leaf. Functions of the stomata are :

(i) They allow the exchange of gases (CO₂ and O₂ ) with the atmosphere.

(ii) Transpiration (loss of water in the form of water vapour) also takes place through stomata.

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

Answer:

The three types of muscle fibers are:

(i) Striated muscle

(b) Smooth muscle (Unstriated)

(c) Cardiac muscle

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

Answer:

• The cardiac muscles are present in the wall of the heart.

• The specific function of the cardiac muscle is to control the continuous rhythmic contraction and relaxation of the heart.

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

Answer:

Ques 9. Draw a labelled diagram of a neuron.

Answer:

A neuron consists of a cell body with a nucleus and cytoplasm, from which long, thin, hair-like parts arise. Each neuron consists of axons, a single long part (process), and dendrites, which are the short, branched parts (processes).

The axon transmits impulses away from the cell body, whereas the dendrite receives nerve impulses from other nerve cells or external stimuli.

Ques 10. (a) Name the following.

• Tissue that forms the inner lining of our mouth.

Answer:

The tissue that forms the inner lining of our mouth is epithelial tissue.

( Epithelial tissue cells are tightly packed and form a continuous sheet with almost no intercellular spaces.)

Ques 10. (b) Name the following.

• The tissue that connects muscle to bone in humans.

Answer:

The tissue that connects muscle to bone in humans is a tendon.

(Tendons are connective tissue. They are fibrous tissue with great strength but limited flexibility.)

Ques 10. (c) Name the following.

• Tissue that transports food in plants.

Answer:

The tissue that transports food in plants is the phloem.

(Phloem transports food manufactured in the leaves to other parts of the plant.)

Ques 10. (d) Name the following.

• Tissue that stores fat in our body.

Answer:

The tissue that stores fat in our bodies is adipose.

(Adipose tissue is found below the skin and between internal organs. The cells of this tissue are filled with fat globules, which act as insulators.)

Ques 10. (e) Name the following.

• Connective tissue with a fluid matrix

Answer:

Connective tissue with a fluid matrix is Blood.

(Blood flows to transport oxygen, food, hormones, and waste material)

Ques 10. (f) Name the following.

• Tissue present in the brain.

Answer:

The tissue present in the brain is nervous tissue.

( The brain, spinal cord, and nerves are all composed of nervous tissue. The cells of this tissue are called nerve cells or neurons.)

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

Answer:

The types of tissue in the following are:

Skin - Stratified squamous epithelial tissue
The bark of a tree - Cork (protective tissue)
Bone – Skeletal connective tissue
Lining of kidney tubules - Cuboidal epithelial tissue
Vascular bundle - Complex permanent tissue

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

Answer:

The parenchyma tissue is present in leaves, fruits, and flowers.

Parenchyma is the most common simple permanent tissue consisting of relatively unspecialized cells with thin cell walls (living cells). This tissue generally stores food and chlorophyll.

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

Answer:

The epidermis is the outermost layer of cells of a plant's body. The epidermis is usually made of a single layer of cells.

The following are the roles of the epidermis:

1. The entire surface of plants living in very dry habitats has an outer covering of epidermis to protect against water loss.

2. To protect against loss of water, mechanical injury, and invasion by parasitic fungi, epidermal cells on the aerial parts of the plant often secrete a waxy, water-resistant layer on their outer surface.

3. Stomata present on the epidermis help in gaseous exchange and transpiration.

Since it has a protective role to play, epidermal tissue cells form a continuous layer with no intercellular space.

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

Answer:

Cork is the outer protective layer of the bark of a tree. The cork cells are dead and compactly packed with no intercellular space. Their cell walls are coated with a waxy substance, suberin, which does not allow water and gases to pass through.

Therefore, it protects the plant against mechanical injury and also prevents the loss of water by evaporation.

Ques 15. Complete the following chart:

Answer:

• Simple permanent tissue is of three types: Parenchyma, Collenchyma, and Sclerenchyma.

• Complex permanent tissue is of two types: Xylem and Phloem

Thus, the completed chart is :

Approach to Solve Class 9 Science Chapter 6 Tissues Question Answer

Provided below are a few useful tips that students can use to answer the questions of the tissue chapter effectively.

• Students should start by understanding the classification of plant and animal tissues with examples.

• Diagrams added in the Tissues class 9 question answer can be used to understand the different types of tissues.

• They should focus on the tissues' structure, their functions, and their locations in the body. Students can make flashcards of different tissues by using the Class 9 Science Chapter 6 Tissues solutions.

• Focus should be given to diagrams, labelling, and drawing tissues as they are frequently asked in the exam.

• The NCERT Solutions for Class 9 Science have all the solved exercise questions with the necessary information.

Also, check the NCERT Books and the NCERT Syllabus here:

• NCERT Books Class 9 Science

• NCERT Syllabus Class 9 Science

• NCERT Books Class 9

• NCERT Syllabus Class 9

Important Topics of Class 9 NCERT Science Chapter 6

The important topics of the tissues chapter are listed below. Knowing the main topics makes the preparation organized and systematic. The NCERT Solutions for Class 9 Science Chapter 6 Tissues include questions related to all these topics.

• Plant Tissues

• Meristematic Tissue

• Permanent Tissue

• Animal Tissues

• Epithelial Tissue

• Connective Tissue

• Muscular Tissue

Important Question from NCERT Class 9 Science Chapter 6

Given below is a question from the tissue chapter, along with the detailed explanation. For more such questions, students can refer to the NCERT Solutions for Class 9 Science Chapter 6 Tissues.

Q1. Some connective tissue helps to connect the neurons together.

Options

• True

• False

Answer:

Nerve cells are connected to each other with the help of connective tissue, and together they are called a single nerve.

Hence, the given statement is true.

What Will You Learn From Tissues NCERT Solutions

Living beings are made up of groups of cells that perform specific tasks together. Students, by going through these solutions, learn a lot of interesting things, which are given below:

• Students will learn the difference between plant and animal tissues.

• They will understand the structure and function of meristematic and permanent tissues through clear examples.

• Tissues NCERT Solutions describe the role of xylem and phloem in plants.

• Students will explore how tissues provide strength, support, and coordination in multicellular organisms through the Tissues class 9 question answer.

• They will gain knowledge about different types of tissues, such as muscle tissue, connective tissue, and nervous tissue.

NCERT Solutions for Class 9 Science Chapter-wise

Below are the chapter-wise solutions: