How does osmosis control the opening and closing of the stomata?

Answer 1

Kindly click the link below to get the information ; but remember that you have to have the basic knowledge of botany. Because it is not easy to understand the intricate mechanism and chemical reactions.

http://en.wikipedia.org/wiki/Stoma#Opening_and_closure

Answer 2

To simplify the process:
The guard cells of the leaf's lower epidermis are the only cells in this region that contain chloroplasts and therefore carry on photosynthesis. In light, photosynthesis produces sugar which
causes the inside of the guard cells to have a lower concentration of water than the surrounding cells. Water diffuses (actually osmosis) into these guard cells , swelling them, thus causing the stomata to open. In darkness (i.e.,night), in the absence of sugar production, the reversal of water movement occurs and the guard cells slightly shrink, and the stomata close.
I believe that this is a theoretical explanation amongst others.

Answer 3

When the plant has a lot of water, the guard cells around the stomata will swell and open. When the plant is lacking in water, the guard cells will contract and close the stomata.

Answer 4

the physiological mechanism is extremely complicated so I won't pass into element now the hassle-free answer is turgor stress while the preserve cells take in water they develop stress interior called turgor stress this reasons the stoma (stomata pl.) to open conversely while the preserve cells lose water the turgor stress decreases and the preserve cells substitute into flaccid this reasons the stoma to close this technique is controlled by ability of a mixture of aspects

Answer 5

mechanism
OPENING OF STOMATA
when the plants are exposed to light large quantities of k+ ions will accumulate in guard cells the ATP generated by photosynthesis is required by the guard cells now these are stemps H+ SHOULD BE SENT OUT IN TO THE EPIDERMAL CELLS FOR K+UPTAKE OF GUARD CELLS SO WHAT EXACTLY HAPPENS IS THIS IS ACTUAL MECHANISM 1 STARCH WILL BE CONVERTED INTO MALIC ACID THIS MALIC ACID WILL SPLIT INTO H+ AND MALATE- INOS SO NOW IN THE GURAD CELLS H+IS THERE DUE TO THE MALIC ACID BREAK DOWN NOW H+IS ACTIVELY SENT OUT IN ORDER TO BALANCE K
+ WILL COME IN THE RATIO IS H/K IS 2/6 SO EXCESS POSITIVE IS THERE SO CL- ION WILL GO IN THE BUTY HERE IS AS THERE ARE ALL IONS PRESENT THE WATER GRADIENT IS CREATED SO WATER FROM SURRONDINGS WILL GO IN TO THE GUARD CELLSTHIS WILLLLL INCREASE THE SIZE OF GUARD CELLS SO PORE IS OPENED THIS IS REVERCE FOR CLOSING OF STOMATA