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प्रश्न
Briefly explain how the rate of transpiration is affected by:
The intensity of light.
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उत्तर
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.
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संबंधित प्रश्न
Mention any three methods by which the plants tend to reduce transpiration.
In an experiment, four freshly plucked leaves (A-D) of a plant, such as those of china – rose, were treated as follows:
(a) Coated with Vaseline on its upper surface.
(b) coated on the lower surface.
(c) coated on both surface
(d) left uncoated.
All the four leaves A, B, C & D were left in a room for about 24 hours.
(i) which leaf would become most limp? Why?
(ii) which leaf would show least limping? Why?
Expand the following biological abbreviations :
IAA
Explain how the rate of transpiration is affected on:
a windy day
Briefly explain how the rate of transpiration is affected by:
The humidity of the atmosphere.
Describe any three conditions which affect transpiration.
Name three extrinsic factors which decrease the rate of transpiration.
Give a reason/suitable explanation.
Transpiration increases with the velocity of the wind.
