How does guard cells control the turgidity to close and open the stoma? I know it is controlled by water flowing in and out. But how does it control the water to leave the cell when it is nighttime(no light) and go into the cell when it is daytime(with light)

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22-01-2021
Biology

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How does guard cells control the turgidity to close and open the stoma? I know it is controlled by water flowing in and out. But how does it control the water to leave the cell when it is nighttime(no light) and go into the cell when it is daytime(with light)

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cutecadets cutecadets · Answer 1 · 2021-01-22T09:56:50+01:00

Explanation:

The opening and closing of stomata are controlled by the guard cells. When water flows into the guard cells, they swell up and the curved surface causes the stomata to open. When the guard cells lose water, they shrink and become flaccid and straight thus closing the stomata

Guard cells regulate the passage of water vapor, oxygen, and carbon dioxide into and out of the leaf. When the guard cells are very turgid, they pull apart, opening the stoma. When the guard cells lose water and become flaccid, they collapse, closing the stoma.