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Question
Briefly explain how the rate of transpiration is affected by:
The intensity of light.
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Solution
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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RELATED QUESTIONS
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?
Answer the following (only in few words);
What is the impact of more atmospheric pressure on transpiration?
Explain how the rate of transpiration is affected on:
a windy day
Choose the correct answer:
Rate of transpiration is more, when __________
Transpiration rate is reduced ______.
“A higher rate of transpiration is recorded on a windy day rather than on a calm day.” Explain.
Give Technical Term
The substances which check the rate of transpiration.
How does the rate of Transpiration differ when there is High temperature?
(a) State whether the following statement are True or False.
(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.
Atmospheric humidity promotes transpiration from a green plant.
