how does gas exchange happens in plant cell
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When the stomata are open, carbon dioxide enters the leaf, and oxygen and water vapor go out. There are usually more stomata on the underside of a leaf than on the upper surface. These connect to the stomata on the underside of the leaf where the gases can enter and exit the leaf.
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The gases diffuse into the intercellular spaces of the leaf through pores, which are normally on the underside of the leaf - stomata. ... From these spaces they will diffuse into the cells that require them. Stomatal opening and closing depends on changes in the turgor of the guard cells.
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