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guard cell

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Definition: Play

noun. One of the paired cells in the epidermis of a plant that control the opening and closing of a stoma of a leaf.

Sentence: Play Play

The guard cells swell with water to open the stoma, allowing gas exchange.

Synonyms: Play

stomatal cell; epidermal cell; plant cell

Antonyms: Play

non-guard cell; subsidiary cell; root cell

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