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the opening and closing of this structure on a plant leaf allows for water and gas exchange to occur. A) xylem B) phloem C) stomata D) guard cells
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the opening and closing of this structure on a plant leaf allows for water and gas exchange to occur. A) xylem B) phloem C) stomata D) guard cells

User Sunny Parekh
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C) stomata

Each stoma is surrounded by two guard cells, which can open/close depending on environment. When there is moisture, the guard cells swell with water, and force the stoma to open and allow gas exchange to occur.

User Emir Mamashov
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