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प्रश्न
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?
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उत्तर
(i) The leaf D would become most limp. This is because water would be lost through transpiration from upper as well as the lower surface of leaf D since it is uncoated.
(ii) The least limping would be shown by leaf C since its upper and lower surfaces have been coated with vaseline. So no water is lost from the leaf through transpiration since the stomatal openings get blocked by vaseline.
संबंधित प्रश्न
With decrease in atmospheric pressure, the rate of transpiration will
One of the internal factors which affect the rate of transpiration is
Give suitable explanation for the following:
A higher rate of transpiration is recorded on a windy day rather than on a calm day.
List the four advantages of transpiration to the plants.
Answer the following (only in few words);
What is the relationship between transpiration water and water absorbed from the soil?
Mark the most appropriate answer in the following:
If the rate of transpiration becomes more than the rate of photosynthesis, plant will ______
Briefly explain how the rate of transpiration is affected by:
The intensity of light.
How does the rate of Transpiration differ when there is High humidity?
Name the three external factors which increase the rate of transpiration.
