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प्रश्न
When guard cells are flaccid, the stoma must be ______.
पर्याय
Open
Neither open nor closed
Closed
None of these
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उत्तर
When guard cells are flaccid, the stoma must be closed.
Explanation:
A flaccid guard cell closes the stomata by relaxing its inner membrane. Likewise, the inner wall pulls outward to open the stomata when the guard cells become turgid.
संबंधित प्रश्न
The apparatus shown in the following diagram is Garreau’s potometer 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 few hours, CaCl2 vials were taken out and weighed again.
What is the purpose of using a manometer?
State the functions of guard cells.
The figure below represents the vertical section of a leaf:
(i) Name the parts labeled 1 to 5.
(ii) What do the two arrows (dotted and solid) indicate in the day time and at night?
(iii) Could you add one more arrow in the figure? If yes, what for?
(iv) How many leaf veins have been shown in this section?
Given below are the diagrams of a certain structure in plants in two conditions.
(i) Name the structure shown.
(ii) Name the parts numbered 1-5.
(iii) What is the most apparent difference between A and B in the structure shown?
(iv) Describe the mechanism which brings about the change in the structure depicted in A and B.
Name the following:
The process of getting rid of excess water in the form of water vapour through the stomata.
State the Location:
Stomata
Mention the differences between stomatal and lenticular transpiration.
How will you differentiate the different types of transpiration?
The paper used to demonstrate unequal transpiration in a dicot leaf is ______.
