In certain higher plants, it is a waterproof protective layer covering the epidermal cells of leaves and other parts and limiting water loss.
In certain higher plants, it is a waterproof protective layer covering the epidermal cells of leaves and other parts and limiting water loss. In many invertebrates, it is a dead, noncellular excretion of the epidermis. In arthropods, it is an exoske  leton consisting of layers of protein and chitin, modified for various uses. In general, it is the outer layer or part of an organism that comes into contact with the environment. FTP, what in humans is identical with the epidermis, but popularly associ  ated with a part of the fingertip?
In certain higher plants, it is a waterproof protective layer covering the epidermal cells of leaves and other parts and limiting water loss.
cuticle