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how is the opening and closing of stomata controlled

Dear student,

Stomata is a microscopic pore on the surface (epidermis) of land plants.  In plants exchange of gases occurs mostly through stomata. Intake of Oxygen and release of carbon di oxide occurs through stomata. The immediate cause of the opening or closing of the stomata is a change in the turgidity of the guard cells. The inner wall of each guard cell, towards the pore is elastic and thick. Increased turgidity, opens the stomata and vice versa. Cell wall of guard cells has microfibrils that help this process.

Hope this information helps,Regards.

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The opening and closing of stomata is 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 loses water, they shrink and become flacid and straight thus closing the stomata..............
HOPE IT WILL HELP YOU..............
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guard cells are cells surrounded each stoma. They help to regulate the rate of transpiration by opening and closing the stomata guard cells have lost water which causes the cells to become fluid and stomatal opening to close
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Good afternoon Dilip.
Opening and closing of stomata is controlled by guard cells. These guard cells contract and expand (like muscles). Thus it helps in opening and closing of stomata and also in and out of gases.
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Its movement is controlled by the guard cells. When the mesophyll requires oxygen, the guard cells start transpiration to open the stomata to take it. When the plant want to save water the guard cells stop transpiration. In this phenomen,the guard cells open and close themselves for the diffusion of gases.
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bha
 
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The opening and closing of the stomata is controlled by guard cells
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The guard cells allow stomata to open only in the presence of sunlight . And if the stomata wants to transpire water vapour into atmosphere.
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