Question

why are the epindermis layers of the leaf coated in a waxy cuticle?
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Answer 1

Answer:

A waxy layer known as the cuticle covers the leaves of all plant species. The cuticle reduces the rate of water loss from the leaf surface. Other leaves may have small hairs (trichomes) on the leaf surface. Trichomes help to avert herbivory by restricting insect movements or by storing toxic or bad-tasting compounds.

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Answer 2

Answer:

Epidermis protects all the plant . The epidermal cells often secreate a waxy water resistant layer on their outer walls which aids in protection against loss of water , mechanical injury and invasion by parasitic fungi .