Stoma (English: stomata are holes between the control cells (cell guard) that controls the opening of stoma mouth there is the entrance of air and water. Most of the plants stoma, which is below the surface because crop photosynthesis well in range with the most Sun. Stoma to the bottom to prevent the loss of water through the mouth. In addition, the upper surface of the leaf is coated with a thick wax which reduces the dehydration from the oral orders.
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