stoma defined in 1951 yearstoma - stoma (plural stomata);
stoma - (1) Pore in the epidermis of plants, present in large numbers, particularly in leaves, through which gaseous exchange takes place. Each stoma is surrounded by two specialized, crescent-shaped epidermal cells known as guard-cells, whose movements, due to changes in turgidity, govern opening and closing of pore. (2) Includes both pore and guard-cells.
near stoma in Knolik
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