PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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How does humidity affect the rate of transpiration?
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As humidity increases, the rate of transpiration decreases.
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As humidity increases, the rate of transpiration increases.
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As humidity increases, the rate of transpiration stays constant.
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None of the above
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Explanation:
Detailed explanation-1: -The transpiration rate is inversely proportional to the humidity in air. High humidity reduces the outward diffusion of water through the stomata. As a result, less water is lost, and lower transpiration rates are observed.
Detailed explanation-2: -As the relative humidity of the air surrounding the plant rises the transpiration rate decreases. It is easier for water to evaporate into dryer air than into more saturated air.
Detailed explanation-3: -The rate of transpiration decreases with decrease in temperature and decrease in light intensity.
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