Briefly explain how the rate of transpiration is affected by
Briefly explain how the rate of transpiration is affected by
(a) Intensity of light
(b) Humidity of the atmosphere
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(a) Intensity of light - During the day, the stomata are open to facilitate the inward diffusion of carbon dioxide for photosynthesis. At night they are closed. Hence more transpiration occurs during the day. During cloudy days, the stomata are partially closed and the transpiration is reduced.
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