Epidermal and cork tissues are present on the outermost surface of the tree, and take any impact inflicted upon the tree. They also provide rigidity to the plant and cover the vascular tissues of the plant, protecting them from physical blows. So they are called the protective tissues of the plant.

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epidermis and cork cells are known as protected tissue because epidermis and cork cells protect the plant from water loss and protects the plant from insects. epidermis and cork cells had waxy coating known as cutin and suberin which helps the plant from water loss .
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