Here is a document with multiple-choice questions related to excretion in plants:

Excretion in Plants – Multiple Choice Questions

1. Which of the following is NOT a form of excretion in plants?
a) Transpiration
b) Guttation
c) Respiration
d) Secretion

2. Excretion in plants primarily involves the removal of which waste product?
a) Carbon dioxide
b) Oxygen
c) Water
d) Nitrogenous compounds

3. Which part of the plant is responsible for excretion?
a) Leaves
b) Roots
c) Stems
d) Flowers

4. The process of excretion in plants is mainly carried out through:
a) Stomata
b) Lenticels
c) Trichomes
d) Root hairs

5. Which of the following is the primary function of stomata in excretion?
a) Absorbing water and nutrients
b) Releasing oxygen
c) Excreting waste gases
d) Regulating water loss

6. Guttation is the process by which plants excrete:
a) Carbon dioxide
b) Oxygen
c) Water
d) Nitrogenous compounds

7. Which of the following is NOT a nitrogenous waste product excreted by plants?
a) Ammonia
b) Urea
c) Nitrates
d) Nitrites

8. The process of transpiration in plants involves the excretion of:
a) Oxygen
b) Carbon dioxide
c) Water
d) Sugars

9. Which of the following is a waste product excreted by plant roots?
a) Oxygen
b) Carbon dioxide
c) Nitrogenous compounds
d) Starch

10. In addition to excretion, plants also use this process to regulate their temperature:
a) Photosynthesis
b) Reproduction
c) Transpiration
d) Germination

Answer Key:
1. c) Respiration
2. d) Nitrogenous compounds
3. b) Roots
4. a) Stomata
5. c) Excreting waste gases
6. c) Water
7. c) Nitrates
8. c) Water
9. c) Nitrogenous compounds
10. c) Transpiration

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