what is the role of apidreams in plant ?
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forms a boundary between the plant and the external environment. The epidermis serves several functions: it protects against water loss, regulate gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients.
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The epidermis is formed of single contimous layered cells. It covers without any intercellular space and protects all parts of the plant. Small pores, called stomata, are present on the leaf, and help in the exchange of gases and water. ... In desert plants, epidermis has a thick waxy coating of cutin, to check water loss.
The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.
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