Chapter 6 


Intext question and answers 

Page #69 

1. What is a tissue?
Ans:   A group of cells that has similar organ, structure, and performing a specialized function in an organ of an organism is called tissue.

2. What is the utility of tissue in multicellular organisms?
Ans:   The utility of tissues in multicellular organisms:
  • Tissues group together to form organs.
  • Tissues perform special functions.
  • They help in the division of labor.
  • They help in the formation of complex organisms.

Page #74 

1. Name the type of simple tissue
Ans:  Simple plant tissues are parenchyma, collenchyma, and sclerenchyma.

2. Where is the apical meristem found?
Ans:  Apical meristem is found in the tip of the shoot, branches, and route.

3. Which tissue makes up the husk of coconut?
Ans:  Sclerenchyma.

4. What are the constants of Phloem?
  • Sieve tubes
  • Companion cells
  • Phloem parenchyma
  • Phloem fibers

Page #78 

1. Name the tissue responsible for movement in our body?
Ans:  Muscular tissue.

2. What does a neuron look like?
Ans:  A neural looks electric cable wire.

3. Give 3 features of cardiac muscles.
Ans:  Cardiac muscles –
  • Are cylindrical and branch
  • Have faith strips
  • Have your nuclei in the center
4. What are the functions of the areolar shoot?
(a) Act as picking tissue in between the organs.
(b) Support internal organs and repairs internal tissues.

Exercise question and answer 

1. Define the term tissue.
Ans:  A group of cells that has similar organ, structure, and perform a specialized function in an organ of an organism is called tissue.

2. How many types of elements together make up the xylem tissue?  Name them?
Ans: Xylem tissue is made up of –
  • Xylem parenchyma,
  • Xylem vessels
  • Xylem sclerenchyma.
  • Xylem tracheid.
3. How are simple tissues different from complex tissues in plants?
Ans: Simple tissues
  • This type of tissue is made up of the same type of cell.
  • This tissue performs a variety of functions like storage mechanical support etc.,
  • For example parenchyma, collenchyma and sclerenchyma.
  Complex tissues
  • This type of tissues is made up of more than two cells
  • These tissues help in conducting water mineral and food. Example – Xylem and phloem
4. Difference between parenchyma, collenchyma, and sclerenchyma.
Ans:  Parenchyma –
Cell war is thin and it is made up of cellulose
The cell wall is thick, made up of cellulose with thickenings of pectin in the corner.
The cell wall is thick, made up of cellulose and lignin.

5. What is the function of stomata?
  • Stomata helps in exchange of gases.
  • They help in losing of water in the form of a first.
6. Diagrammatically show the difference between the three types of muscle fibers
7. What is the specific function of cardiac muscle?
Ans: Their rhythmic contraction and relaxation help in heartbeat throughout life.

8. Difference between striated muscles, unstrained muscles, and cardiac massage on the basis of their structure and site or location in the body.
Ans: Striated muscles:
  • These muscles are cylindrical, fiber-like.
  • This module has many nuclei towards the periphery.
  • It shows strips.
  • It is an unbranched.
  • Found in the organ attached to skeleton bicep muscles of the upper arm.
Unstrained muscles:
  • These muscles are spindle-shaped.
  • Thesemuscles have one nucleus in the center.
  • It does not show strips.
  • It is unbranched.
  • Found in a tubular or visceral organ like blood vessels.
Cardiac muscles
  • They are cylindrical.
  • They have one to two nuclei present in the center.
  • It shows faith strips.
  • It is branched.
  • Founding heart.

9. Draw a label diagram of a neuron.

10. Name the following.
(a) Tissue that forms the inner lining of our mouth.
(b) Tissue that contract muscle to bone in humans.
(c) Tissue that transport food in plants.
(d) Tissue that stores fat in our body will stop.
(e) Connective tissue with a fluid matrix.
(f) Tissue present in the brain.
(a) Squamous epithelial tissue.
(b) Tendons
(c) Phloem
(d) Adipose tissue.
(e) Blood
(f) Nervous tissue.

11. Identify the type of tissue in the following: skin, bark off tree, bone, the lining of kidney tube, vascular bundle.
Ans: Skin -Epidermis
Bark of the tree -Dead epidermis
Bone – Connective tissue
The lining of kidney tube -Cuboidal epithelium
Vascular bundle -Xylem and Phloem tissue.

12. Name the regions in which parenchyma is present.
Ans:  It is found in the whole body, soft organs, storage organs, leaves, fruit pulp, etc.,

13. What is the role of the epidermis in the plant?
Ans:  Role of the epidermis in the plants is
  • It protects the internal part of the plant body. Plant organs from external injury, temperature, microorganisms, parasitic fungi, etc.,
  • It protects the plan from excessive loss of water from internal tissue will stop.
  • It is also stored in water, McKinley Ridge. It sometimes secrets some substances and also does photosynthesis.
14. How does the Cork act as a protective tissue?
Ans:  Cork is formed of dead cells without intercellular space. They have deposits of suberin which prevents the loss of water from plant tissues. It forms a thick layer of the dead cell that does not have any effect of temperature, gases, water, microorganisms, and diseases, etc., The cork is present as an external protective layer.

15. Complete the table

Important points

  • A group all cell that has similar organs, structure and performs a specialized function in an organ of an Organism is called tissue.
  • Group of different tissues performs a particular function is an organ.
  • A group of organs performing a set of common function is an organ system.
  • The brain, spinal cord nervous are called composed of nose.
  • The cells of nervous tissue are called nervous cells or neurons.