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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
Give suitable explanation for the following:
Water transpired is the water absorbed.
There is a general belief that forests tend to bring more frequent rains. Can you explain it scientifically?
Choose the correct answer from the four options given below :
Which one of the following does not affect the rate of transpiration ?
Expand the following biological abbreviations :
(i) ABA
Answer the following (only in few words);
What is the effect of temperature on transpiration?
Explain how the rate of transpiration is affected on:
a windy day
Choose the correct answer:
Rate of transpiration is more, when __________
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?
