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Opening and Closing of the Stomata

Basis of stom...

Question

Basis of stomatal opening is

A

Exosmosis

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B

Endosmosis

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C

Decrease in cell sap concentration

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D

Plasmolysis of guard cells

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Solution

The correct option is B Endosmosis
Endosmosis of water is the movement of water from outside to cell which causes pushing out of the outer and inner walls of guard cells, thus opening the stomatal pore.

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Similar questions

Q. Select the correct events leading to the stomatal opening.
(a) The decline in guard cell solutes.
(b) Lowering of osmotic potential of guard cells.
(c) Rise in K ions in guard cells.
(d) Movement of water from neighboring cells into guard cells.
(e) Guard cells become flaccid.

Q. Assertion: Opening and closing of stomata is controlled by guard cells.
Reason: Shrinking of guard cells results in the opening of stomatal pore.

Q. Stomatal aperture is surrounded by guard cells and widens (opens) when guard cells are

Q. How do the guard cells regulate opening and closing of stomatal pores?

Q. Which of the following get accumulated in the vacuoles of guard cells during stomatal opening?

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