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what is guard cell of stomata ???
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Stomata (multiple stoma) are located on the outermost cellular layer of leaves, stems, and other plant parts.An open stoma facilitates the process of photosynthesisWhile an open stoma is necessary for the plant to undergo photosynthesis, it comes with a negative side effect: water loss. Over 95% of a plant’s water loss occurs through the stoma via water vapor. the guard cells take in sugars, potassium, and chloride ions (i.e., solutes) through their membranes. An increase in solutes induces an influx of water across the guard cell membrane. As the volume of the guard cells increase, they “inflate” into two kidney-bean-like shapes.
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Guard cells are cells surrounding each stoma. They help to regulate the rate of transpiration by opening and closing the stomata.
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