Stomata are necessary for exchanging gases with the atmosphere and for transpiration, which is the loss of water in the form of water vapor.
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The stomata are enclosed by two kidney-shaped cells called guard cells.
The small pores in the epidermis of a leaf are called stomata. They facilitate gas exchange and transpiration, which is the loss of water vapor from the plant.
Answer: Most epidermal cells are relatively flat, with their outer and side walls often being thicker than the inner wall.
The waxy, water-resistant layer aids in protection against loss of water, mechanical injury, and invasion by parasitic fungi.