Q: What is the role of epidermis in plants?
Ans: Epidermis present on the outer
surface of the entire plant body. Its function is to protect. Hence the cells
of the epidermal tissue form a continuous layer without any intercellular space. Most cells are relatively flat.
Usually there outer and side wall are thicker than the inner wall (Why? – Its main
function is protection hence outer wall is thicker). On aerial parts of plants it secrets a waxy water-resistant layer to protect against the loss of water, mechanical injury and invasion by parasitic fungi.It performs the following
important functions:
(i) It protects the plant body
(ii) It protects the plant against
mechanical injury
(iii) It allows exchange of gases
through the stomata
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