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प्रश्न
What is wilting? Some plants show wilting of their leaves at noon even when the soil is well watered, Why is it so?
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उत्तर
Wilting refers to the loss of cellular turgidity in plants which results in the drooping of leaves or plant as a whole because of lack of water.
During noon the rate of transpiration exceeds the rate of absorption of water by roots. Due to the excessive transpiration, the cells of leaves lose their turgidity and wilt.
संबंधित प्रश्न
One of the internal factors which affect the rate of transpiration is
The loss of water as water vapour from the acrial parts of a plant is known as
Give suitable explanation for the following:
Water transpired is the water absorbed.
Give suitable explanation for the following:
More transpiration occurs from the lower surface of a dorsiventral leaf.
Expand the following biological abbreviations :
(i) ABA
Mark the most appropriate answer in the following:
If the rate of transpiration becomes more than the rate of photosynthesis, plant will ______
Choose the correct answer:
The rate of transpiration is determined with the following instrument ____________
Briefly explain how the rate of transpiration is affected by:
The humidity of the atmosphere.
Name three extrinsic factors which decrease the rate of transpiration.
