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Q. |
Transpiration is mainly effective during . |
A. | Day |
B. | Early evening |
C. | Just after sunset |
D. | Night |
Answer» D. Night | |
Explanation: While the effect of root pressure in transport of water is more important at night, Transpiration is important during the day when the stomata are open. Thus, transpiration pull becomes the major driving force in the movement of water in the xylem during daytime. |
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