TREE PHYSIOLOGY
TRANSPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Light intensity has no effect on the rate of transpiration
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The higher the light intensity the lower the rate of transpiration
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The higher the light intensity the higher the rate of transpiration.
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None of the above
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Detailed explanation-1: -The transpiration rate is increased due to the increase in light intensity. During daytime in the sunlight, the rate of transpiration is faster.
Detailed explanation-2: -As light intensity increases, the rate of transpiration increases because stomata are open in the light.
Detailed explanation-3: -The rate of transpiration can be changed by the intensity of light. The process of transpiration is faster in plants in the light than they do in the dark. This is due to the fact that light causes the stomata to open. By warming the leaf, light also accelerates transpiration.
Detailed explanation-4: -Answer: (a) Light intensity: It increases or decreases the rate of transpiration. In strong light, the rate of transpiration is more because stomata are wide open. In dim light or on a cloudy day the stomata are partially closed reducing the rate of transpiration.
Detailed explanation-5: -The light intensity, temperature, humidity, wind and water supply will all affect the transpiration rate.