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प्रश्न
Give suitable explanation for the following:
Excessive transpiration results in the wilting of the leaves.
उत्तर
When the rate of transpiration far exceeds the rate of absorption of water by roots, the cells lose their turgidity. Hence, excessive transpiration results in wilting of the leaves.
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संबंधित प्रश्न
One of the internal factors which affect the rate of transpiration is
(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:
More transpiration occurs from the lower surface of a dorsiventral leaf.
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?
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 ____________
Choose the correct answer:
Transpiration rate is high, when ___________
“A higher rate of transpiration is recorded on a windy day rather than on a calm day.” Explain.
Name the three external factors which increase the rate of transpiration.
