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प्रश्न
Describe any three conditions which affect transpiration.
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उत्तर
The three conditions which affect transpiration are the following :
- Sunlight: In bright sunlight, the stomata remain fully open and transpiration takes place through the stomatal pores. At night stomata remain closed, so transpiration is reduced.
- Wind: If the Wind velocity is high, transpiration becomes rapid because the water vapour is carried away before the air around the leaf becomes saturated.
- Available water: If available water in the soil is low, the transpiration is low and the leaves may even begin to wilt.
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संबंधित प्रश्न
Most of the transpiration in tall trees occurs through
Give suitable explanation for the following:
Water transpired is the water absorbed.
What is wilting? Some plants show wilting of their leaves at noon even when the soil is well watered, Why is it so?
Given below is an apparatus which has setup to investigate a physiological process in plants. The setup was placed in bright sunlight. Answer the questions that follow:
Name the process being studies. Define the process.
Name the following.
The instrument used for measuring the rate of transpiration.
Briefly explain how the rate of transpiration is affected by:
The intensity of light.
What is cohesion?
Give a reason/suitable explanation.
Transpiration increases with the velocity of the wind.
(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.
