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The factor most important in regulating transpiration is
Options
(a) temperature
(b) light
(c) wind
(d) relative humidity
Correct Answer:
temperature
Explanation:
Temperature is the most important factor that regulates transpiration. Transpiration takes place through open stomata. At 38-40°C stomata can open in complete darkness while at 0°C they remain closed even in continuous light. Normally high temperature above 30°C reduce stomatal opening in many species.
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Topics: Transport and Nutrition in Plants
(163)
Subject: Biology
(4253)
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