what is stomata?give two functions of stomata.

Stomata are tiny plant structures found on the outer skin layer, also known as the epidermis, of plants They consist of two specialized cells, called guard cells that surround a tiny pore called a stoma. The word stomata means "mouth" in Greek because they allow communication between the internal and external environments of the plant. Their main function is to allow gases such as carbon dioxide, water vapor and oxygen to move rapidly into and out of the leaf. Stomata are found on all above-ground parts of plants including the petals of flowers, petioles, soft herbaceous stems and leaves. They are formed during the initial stages of the development of these various plant organs and therefore reflect the environmental conditions under which they grew.

Stomata is a minute epidermal pore in a leaf or stem through which gases and water vapor can pass.The pore is bordered by a pair of specialized cells known as guard cells that are responsible for regulating the size of the opening.

Their main job is to let water vapor, gases, and oxygen to move quickly in and out of the plant's leaf. Air containing carbon dioxide and oxygen enters the plant through these openings where it is used in photosynthesis and respiration, respectively. Oxygen produced by photosynthesis in the spongy layer cells of the leaf interior exits through these same openings. Also, water vapor is released into the atmosphere through these pores in a process called transpiration.

Stomata are pore at the surface of leaves and are formed by two cells named guard cell.