Class 09 Biology - Tissues in Action - Exercises

Questions and Answers

1. Meristematic tissues divide repeatedly. What property of their cells allows them to do this?

(i) They have thick walls for protection. (ii) They contain large vacuoles that store nutrients. (iii) They have thin walls, dense cytoplasm and large prominent nucleus. (iv) They are functionally differentiated cells.

2. If a plant is unable to transport food from leaves to roots, which tissue is malfunctioning?

(i) Xylem (ii) Phloem (iii) Epidermis (iv) Sclerenchyma

3. Why are the epithelial tissues that line an animal’s internal organs usually only one or a few cells thick?

(i) To store food efficiently. (ii) To provide maximum strength. (iii) To allow quick exchange of materials across them. (iv) To reduce friction.

4. How did your ankle, knee, and hip positions differ between the two jumps?

5. Which type of joint is involved when you bend your knees and ankles?

(i) Ball and socket (ii) Hinge (iii) Pivot

6. Assertion (A) and Reason (R) Analysis:

A. Assertion: Epithelium is well-suited for gas exchange in the lungs. Reason: It consists of multiple layers of tall cells that slow down diffusion.

7. Annual Rings and Tree Age:

(i) Interpretation of the graph?

8. Elephant debarking a tree:

(i) Which functions are hampered?

9. Bending sapling and Sclerenchyma:

10. Sugarcane Cuttings:

(i) Why did Type B grow but not Type A?

11. Simple vs. Complex Tissues Discussion:

12. Coconut Husk and Parenchyma:

13. Meristematic Locations:

14. Vacuole comparison:

(i) Which has a larger vacuole?

Class 09 Biology - Tissues in Action - Exercises

Class 09 Biology - Tissues in Action - Exercises

Questions and Answers

1. Meristematic tissues divide repeatedly. What property of their cells allows them to do this?

2. If a plant is unable to transport food from leaves to roots, which tissue is malfunctioning?

3. Why are the epithelial tissues that line an animal’s internal organs usually only one or a few cells thick?

4. How did your ankle, knee, and hip positions differ between the two jumps?

5. Which type of joint is involved when you bend your knees and ankles?

6. Assertion (A) and Reason (R) Analysis:

7. Annual Rings and Tree Age:

8. Elephant debarking a tree:

9. Bending sapling and Sclerenchyma:

10. Sugarcane Cuttings:

11. Simple vs. Complex Tissues Discussion:

12. Coconut Husk and Parenchyma:

13. Meristematic Locations:

14. Vacuole comparison:

15. "Each plant tissue performs only one specific function" - Critically examine.

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BioBot

Class 09 Biology - Tissues in Action - Exercises

Class 09 Biology - Tissues in Action - Exercises

Questions and Answers

1. Meristematic tissues divide repeatedly. What property of their cells allows them to do this?

2. If a plant is unable to transport food from leaves to roots, which tissue is malfunctioning?

3. Why are the epithelial tissues that line an animal’s internal organs usually only one or a few cells thick?

4. How did your ankle, knee, and hip positions differ between the two jumps?

5. Which type of joint is involved when you bend your knees and ankles?

6. Assertion (A) and Reason (R) Analysis:

7. Annual Rings and Tree Age:

8. Elephant debarking a tree:

9. Bending sapling and Sclerenchyma:

10. Sugarcane Cuttings:

11. Simple vs. Complex Tissues Discussion:

12. Coconut Husk and Parenchyma:

13. Meristematic Locations:

14. Vacuole comparison:

15. "Each plant tissue performs only one specific function" - Critically examine.

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