Question

)2.Which cells controls the opening and closing of the stomata?

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LiamElite · Tutor for 8 years

Answer

<p> Guard Cells</p>

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<p> Stomata are tiny openings or pores present in the epidermis (surface layer) of plant leaves and stems. They play a vital role for plants as they regulate the exchange of gases, including water vapor (transpiration), oxygen, and carbon dioxide. The opening and closing of these stomata are controlled by specialized cells known as guard cells. Guard cells are kidney-shaped in dicot plants and dumbbell-shaped in monocot plants. They have a unique ability to gain and lose turgor pressure which leads to changing their shape. When the guard cells absorb water and become turgid, the stomata open; and when they lose water and become flaccid, the stomata close. Changes in light, carbon dioxide concentration, and internal plant factors can all trigger this water movement.</p>

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