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Plant Physiology Transpiration - Questions and Answers

Practice questions on Plant Physiology Transpiration.

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16. Leaf surface is coded by the process of
A. Guttation
B. Respiration
C. Photosynthesis
D. Transpiration
Explanation:
17. Due to differences in water potentials of the guard cells, darkness promotes the loss of
A. K⁺ ions
B. Ca⁺⁺ ions
C. Cl⁻ ions
D. Mg⁺⁺ ions
Explanation:
18. The amount of absorbed water lost by plants in the form of vapour is
A. 10%
B. 50%
C. 80%
D. 90%
Explanation:
19. The stoma is open when the guard cells are
A. Flaccid
B. Rigid
C. Turgid
D. Cupid
Explanation:
20. The escape of water vapour from leaves through stomata by diffusion is caused by
A. Active transport
B. Concentration gradient
C. Osmosis
D. Guttation
Explanation:
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