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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?
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.
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संबंधित प्रश्न
With decrease in atmospheric pressure, the rate of transpiration will
Transpiration will be fastest when the day is
Give suitable explanation for the following:
Water transpired is the water absorbed.
List any three major factors that accelerate the rate of transpiration.
There is a general belief that forests tend to bring more frequent rains. Can you explain it scientifically?
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);
How does transpiration take place in night?
Mark the most appropriate answer in the following:
If the rate of transpiration becomes more than the rate of photosynthesis, plant will ______
How does the rate of Transpiration differ when there is High temperature?
