NCERT Solutions for Tissues Class 9 Chapter 6 Science has all the solutions to the questions provided in the NCERT Book of the latest edition.
Students are advised to practice all the questions to get good marks in the board examination.
| Textbook | NCERT |
| Class | 9 |
| Subject | Science |
| Chapter | 6 |
| Chapter Name | Tissues |
| Category | NCERT Solution |
Class 9 Science Chapter 6 Tissues NCERT Solution
Tissues Intext Questions Page 61
What is a tissue?
Answer
Tissue is a group of similar cells which have similar shape and will work together to perform a specific function
What is the utility of tissues in multi-cellular organisms?
Answer
To provide structural and mechanical support and provide division of labor
Tissues Intext Questions Page 65
Name types of simple tissues
Answer
Parenchyma, collenchyma and sclerenchyma
Where is apical meristem found?
Answer
They are found at the tip of the shoot and root.
Which tissue makes up the husk of coconut?
Answer
Sclerenchyma forms the husk of the coconut. They are dead and their cell walls are thickened due to the presence of lignin.
What are the constituents of phloem?
Answer
The constituents of phloem are:
- Sieve cells,
- Companion cells,
- Phloem parenchyma and
- Phloem fibers
Tissues Intext Questions Page 69
Name the tissue responsible for movement in our body
Answer
Muscular tissue helps the body in movement. It has ability to shorten or contract in order to produce movement of the body parts.
What does a neuron look like?
Answer
Neurons have a cell body which consists of cytoplasm and nucleus, some thread-like structures also emerge from them which are called dendrites.
The cell body extends to axons which have axon endings.
Give three features of cardiac muscles
Answer
Heart muscles are
- Striated
- Involuntary
- Uninucleated and branched.
What are the functions of areolar tissue?
Answer
They are typically found in animal. These are connective tissue. The space between the organs is filled by these tissues.
They provide support for delicate organs and repair the organ when damaged.
Tissues Exercise Questions
Define the term “tissue”
Answer
Tissue is a group of similar cells which have similar shape and will work together to perform a specific function.
How many types of elements together make up the xylem tissue? Name them.
Answer
These are:
- Vessels,
- Tracheids
- Xylem fibers and
- Xylem parenchyma.
How are simple tissues different from complex tissues in plants?
Answer
Simple tissues are made up of only one type of cell, while complex tissues consist of more than one type of cell.
Simple tissues perform only one function while complex tissues perform more than one function
Differentiate between parenchyma, collenchyma and sclerenchyma on the basis of their cell wall
Answer
Difference on basis of their cell wall is
- Parenchyma: Cell walls are thin and made up of cellulose.
- Collenchyma: Cell walls are thick at the edges due to deposition of pectin.
- Sclerenchyma: Cell walls are thickened due to deposition of lignin.
What are the functions of the stomata?
Answer
Function of stomata are:
- Transpiration
- Exchange of gases.
Diagrammatically show the difference between the three types of muscle fibres.
Answer
Types of muscle fibers
Striated:
- Connected with bones
- Voluntary
- Long and cylindrical
- Multiple nuclei present
Smooth:
- Involuntary
- Spindle shaped
- One nucleus present
- Found in lungs, alimentary canal.
Cardiac:
- Involuntary
- Branched
- One nucleus present
- Present in heart.
What is the specific function of the cardiac muscle?
Answer
They are involuntary in nature i.e. are not under our control. They perform a cycle of contraction and relaxation of the heart to allow the pumping of blood to all parts of the body throughout the lifetime of an individual.
Differentiate between striated, unstriated and cardiac muscles on the basis of their structure and site/location in the body.
Answer
- Striated:
- Connected with bones
- Long and cylindrical
- Multiple nuclei present
- Smooth:
- Spindle shaped
- One nucleus
- Found in lungs, alimentary canal.
- Cardiac:
- Branched
- One nucleus present
- Present in heart.
Draw a labelled diagram of a neuron.
Answer
Name the following
Answer
(a) Tissue that forms the inner lining of our mouth
Ans. Squamous epithelium
(b) Tissue that connects muscle to bone in humans.
Ans. Tendon
(c) Tissue that transports food in plants.
Ans. Phloem
(d) Tissue that stores fat in our body.
Ans. Adipose tissue
(e) Connective tissue with a fluid matrix.
Ans. Blood
(f) Tissue present in the brain.
Ans. Nervous tissue
Identify the type of tissue in the following: skin, bark of tree, bone, lining of kidney tubule, vascular bundle
Answer
- Skin: Stratified squamous epithelium tissue.
- Bark of tree: Cork.
- Bone: Connective tissue.
- Lining of kidney tubule: Cuboidal epithelium tissue.
- Vascular bundle: Xylem and phloem.
Name the regions in which parenchyma tissue is present.
Answer
Parenchyma is found in:
- Pith of stem and roots.
- Parenchyma containing chlorophyll are called collenchyma, present in the leaf.
- Parenchyma present in aquatic plants have air cavities, called aerenchyma.
What is the role of epidermis in plants?
Answer
The role of epidermis is to provide protection.
How does the cork act as a protective tissue?
Answer
The cork cells are dead, these cells are packed closely, having no intercellular spaces also, deposition of suberin making them impervious to water and gases.
Complete the following chart:
Answer
Ans.
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