Question

How do guard cells regulates opening and closing of stomatal pores? ​

Answer 1

Answer:

The opening and closing of the stomata is controlled by the guard cells. In light, guard cells take up water by osmosis and become turgid. Because their inner walls are rigid they are pulled apart, opening the pore. In darkness water is lost and the inner walls move together closing the pore.

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Answer 2

Answer:

When the water passes thru garud cells they swell up and result in the opening of stomatal pores.....

but when the garud cell shrinks it result in closing of stomatal pores......

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