The important functions of epidermal cells are:
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It acts as protective layer which protects the internal tissue.
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The depositions of cutin, wax, oils, resins, lignin etc. also helps in protection.
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The presence of sharp and stiff hairs protects the plants from grazing
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In certain group of plants possess chloroplast which there by manufactures food.
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The xerophytic plants stores water and food materials in the form of mucilaginous materials.
