The opening and closing of the stomata are accomplished by the

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The opening and closing of stomata are controlled by specialized cells called guard cells. These cells are able to change shape to control the size of the stomatal opening, which allows for gas exchange between the plant and its surroundings. Sieve tubes are responsible for transporting sugars in plants, translocation is the process of moving materials within a plant, aquaporins are channels that allow water to move through membranes, and xylem is responsible for water transport in plants. None of these are directly involved in regulating stomatal openings.

The Opening and Closing of the Stomata Are Accomplished by the