CLASS- VI ALL SUBJECT STUDY MATERIAL (ICSE)

 

Biology Question Paper

Topic: The Leaf & The Root System
Marks: 20
Time: 40 minutes

Section A: Multiple-Choice Questions (1 mark each)

(Choose the correct answer)

1. The main function of a leaf is:
   a) Absorption
   b) Photosynthesis
   c) Support
   d) Conduction

2. Which part of the root absorbs water and minerals?
   a) Root hairs
   b) Xylem
   c) Phloem
   d) Cortex

3. Which of the following is an example of a modified root?
   a) Onion
   b) Ginger
   c) Carrot
   d) Potato

4. Which pigment is responsible for photosynthesis?
   a) Hemoglobin
   b) Chlorophyll
   c) Xanthophyll
   d) Carotene

5. Stomata are found in:
   a) Stem
   b) Flowers
   c) Leaves
   d) Roots

Section B: Short Answer Questions (2 marks each)

(Answer in brief)

6. What are the two types of root systems? Explain with examples.

7. Why is the leaf called the "food factory" of the plant?

8. What are the functions of stomata?

9. Differentiate between taproot and fibrous root systems.

10. Explain how leaves help in transpiration.

Section C: True or False (1 mark each)

11. The taproot system is found in monocot plants. (____)

12. The leaf blade is also called the lamina. (____)

13. Xylem helps in the transport of food in plants. (____)

14. The root cap protects the growing tip of the root. (____)

15. Phloem transports water in plants. (____)

16. Stomata open and close to regulate gas exchange. (____)

17. Photosynthesis produces carbon dioxide and oxygen. (____)

18. All leaves have a petiole. (____)

19. Fibrous roots are seen in wheat and rice. (____)

20. Roots also help in anchoring the plant to the soil. (____)

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Answer Key

Section A: Multiple-Choice Questions

1. b) Photosynthesis

2. a) Root hairs

3. c) Carrot

4. b) Chlorophyll

5. c) Leaves

Section B: Short Answer Questions

6. Two types of root systems:

   • Taproot system (e.g., Mango, Carrot)

   • Fibrous root system (e.g., Rice, Grass)

7. The leaf is called the "food factory" because it performs photosynthesis, producing food for the plant using sunlight, carbon dioxide, and water.

8. Functions of stomata:

   • Helps in gas exchange (Oxygen and Carbon Dioxide)

   • Regulates water loss through transpiration

9. Difference between Taproot and Fibrous Root:

   • Taproot: Single main root with branches (e.g., Carrot)

   • Fibrous Root: Many small roots of similar size (e.g., Grass)

10. Leaves help in transpiration by losing excess water in the form of water vapor through stomata, which helps in cooling the plant and water movement.

Section C: True or False

11. False (Taproot is found in dicots)

12. True

13. False (Xylem transports water)

14. True

15. False (Phloem transports food)

16. True

17. False (Photosynthesis produces oxygen and glucose)

18. False (Some leaves are sessile, without petioles)

19. True

20. True