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प्रश्न
Describe any three conditions which affect transpiration.
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.
APPEARS IN
संबंधित प्रश्न
(a) State whether the following statement are True (T) or False (F)
(b) Rewrite the false statement in (a) above in the correct form by changing either the first or the last word only.
Wind velocity has an effect on transpiration.
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?
Expand the following biological abbreviations :
IAA
Answer the following (only in few words);
What is the effect of temperature on transpiration?
Briefly explain how the rate of transpiration is affected by:
The intensity of light.
Give Technical Term
The substances which check the rate of transpiration.
What is cohesion?
Name the three external factors which increase the rate of transpiration.
(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.
