TREE PHYSIOLOGY
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which structure in the leaf controls the opening and closing of the stoma?
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cuticle
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epidermis
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guard cell
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spongy mesophyll
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Explanation:
Detailed explanation-1: -The turgor pressure in the guard cells controls the opening and closing of the guard cells.
Detailed explanation-2: -Two guard cells surround each stoma, regulating its opening and closing. Guard cells are the only epidermal cells to contain chloroplasts.
Detailed explanation-3: -cells surrounds each stoma on the leaf surface. Stomata are important because they regulate the uptake of CO2 from the atmosphere for photosynthesis and also the loss of water vapour from the plant during transpiration. The aperture of the stomatal pore is controlled by the two guard cells.
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