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प्रश्न
Give a reason/suitable explanation.
Leaves of some plants wilt during midday and recover in the evening.
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उत्तर
During midday, the high rate of transpiration causes certain plant foliage to wilt. The absorption of water compensates for the loss of water, which is why they typically recuperate in the evening.
संबंधित प्रश्न
Given below is an example of a certain structure and its special functional activity:
Chloroplasts and Photosynthesis
In a similar way, write the functional activity against the following:
Lenticels and ______
Choose the correct answer:
Stomata open during day time because guard cells
The apparatus shown here is Girreau’s poto-meter designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. Before keeping the leaf in between the cups, anhydrous calcium chloride (CaCl2) contained in two small vials were weighed and placed in both the cups. The ends of the cups were closed with corks through which two mercury manometers were connected. After a few hours, CaCl2 vials were taken out and weighed again.
(i) What is the purpose of keeping CaCl2 vials inside the cup?
(ii) After a few hours, the CaCl2 vials were taken out and weighed again. Will you expect any difference in weight? If so, give reasons.
(iii) What was the purpose of using a mano-meter?
(iv) What do you mean by transpiration?
Complete the following sentence with appropriate word:
95% of the total transpiration takes place through ________.
Complete the following sentence with appropriate word:
Openings found on the undersurface of the dorsiventral leaf are ___________.
Write the functional activity of the following structure:
Stomata
Mark the most appropriate answer in the following:
Stomata open during day and close at night because:
Suppose you have a rose plant growing in a pot, how will you demonstrate transpiration in it?
Write a short note on lenticular transpiration.
