Cuticle Layer of a Plant

A waxy covering on the surface of leaves and stems that prevents terrestrial plants from becoming too dry.

The waxy covering of the leaves can be easily seen on this plant. All above-ground parts of the plant are covered by the cuticle in order to prevent water loss. Openings in the leaves, called stomata, open and close to allow CO2 and oxygen to be exchanged between the environment and the plant.