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Biology Std 10-Function and location Study notes Plant Physiology Organ Lenticels Cuticle Mesophyll Cells Location On the surface of old, woody stems Wax like covering on epidermis of leaves & green stems Between the epidermal cells of the leaf. Cambium Below the bark of the tree Xylem Veins of leaf, stem and leaves/ Innermost part of Vascular bundles Found in the veins of leaf, stem and leaves /Periphery of the Vascular Bundles Special openings on the leaf margin Between the epidermal cells of the leaf/ On either side of stoma. In the cytoplasm of green plant cells In the chloroplast Colourless ground substance present in the chloroplast Minute openings(surrounded by guard cells) occurring in large number on the lower surface of leaf Phloem Hydathodes Guard Cells Chloroplast Thylakoids/ Grana Stroma Stoma 1 Function Exchange of photosynthetic and respiratory gases Prevent Transpiration Traps light energy with the chloroplast present in them for photosynthesis Increases the girth of the stem Conducts water from the roots to the aerial parts of plant. Translocates the prepared food in the leaves to the storage organs. Guttation Regulate the opening and closing of the stoma Photosynthesis Site of Light Reaction Site of light independent reaction Diffusion of photosynthetic and respiratory gases , Transpiration
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