Question

why a layer of cuticle is present on the surface of leaves​

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:

A layer of cuticle is present on the surface of leaves in order to reduce transpiration from the leaf surface.

Explanation: