• STOMATA AND LENTICELS
    BIOLOGY

    STOMATA AND LENTICELS

    Stomata Stomata are openings in the epidermal layer of leaves of plants. Two guard cells surround each stoma. The guard cells are bean-shaped. The inner cellwalls of the guard cells are elastic and thicker than the outer cell walls. This enables the guard cells to change in shape thus allowing opening and closing of the stoma. Stomata are frequently found on leaves and aerial parts of stems and branches in herbaceous plants. Guard cells contain chloroplasts and carry out photosynthesis for the plants.   Mechanism of opening and closing of stomatal pore The opening and closing of the stomatal pore (stoma) depends on the turgidity of the guard cells. Variations…

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