what causes the opening and closing of guard cells of stomata during transpiration? hi all good afternoon to all
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Explanation:
* The change of turgidity of gurad cells cause the opening and closing of stomata. *gain of water :turgidity of guard cells opening stomata * loss of water : gaurd cell became flaccid
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- During transpiration, the movement of atomic number 19 ions in and out of the guard cells causes the gap and shutting of stomata.
- During the daytime, once lightweight falls on the leaves, the starch gift in them absorbs the sunshine.
- Due to this formation of malic acid takes place within the guard cells. The malice acid then dissociates to H+ ions and malate.
- The H+ ions move out of the guard cells and as a result, K+ ions move within the guard cells.
- Due to this, the water potential within the guard cells decreases, and water moves within the guard cells inflicting them to tumesce and become turgid that successively causing the gap of stomata pores.
- At night K+ ions move out of them and water potential will increase within the guard cells that causing water to maneuver out of the cell and making them shrink and shut the stomata pores.
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