Stoma (English: stomata are holes between control cells (cell guard) that controls the opening of the mouth, the mouth is closed, there is the entrance of the water and the air. Most of the plants from which the mouth is underneath the surface because crop photosynthesis well during a lot of Sun. Stoma to the bottom to prevent the loss of water from the mouth. In addition, there is a wax coated surface of the upper leaves are thick, which helps minimize dehydration on the mouth.
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