Question

what cause the opening and closing of stomata?



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Answer 1

Wilting or water deficit causes the stomata of a plant to close thus preventing further water loss from the leaves. ... Increase in temperature causes stomata to open.

Answer 2

Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata. To understand how they function, study the following figures. As you look at the figures, keep in mind that an increase in solute concentration lowers the water potential of the solution, and that water moves from a region with higher water potential to a region of lower water potential.

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