CBSE Class 9 Biology Cell The Unit Of Life Worksheet

Ch. – Cell – The unit of life

1. State the function of chromosome in a cell. 1

2. Write two similarities and one dissimilarity between mitochondria and plastid. 3

3. Name the cell organelle that you would associate with elimination of old and worn out cells. 1

4. List two types of plastids and state one function of each. 2

5. Name two cell organelles that contain their own genetic material. 1

6. Division of labour exists even at intracellular level, justify the statement by giving two examples. 2

7. Identify and name the following cell structure: 1

a) the undefined nuclear region of prokaryotic cell

b) site of energy release inside the cell

8. a) List any two structural differences and two similarities between animal cell and plant cell. 3

b) What would happen if an animal cell is kept in distilled water for 24 hrs.

9. When a living plant cell loses water throiugh osmosis, there is contraction of the contents of the cell away from the cell wall. What is this phenomenon called? 1

10. a) Write two points of difference between nuclear region of bacterial cell and animal cell. 3

b) Which structure present in the nuclear region of living cell bears genes?

11. List any two single celled organisms. 1

12. Draw a diagram of plant cell and label its any two parts. 2