AP BIOLOGY

Detailed explanation-1: -Cutin is the major component of the cuticle, the waxy, water-repelling surface layer of cell walls exposed to the environment aboveground.

Detailed explanation-2: -The waxy covering on plant leaves, young stems, and fruit is called the “cuticle". It is composed of cutin, a wax-like material produced by the plant that is chemically a hydroxy fatty acid. The purpose of this covering is to help the plant retain water.

Detailed explanation-3: -Cuticle is built of cutin, waxes and polysaccharides. The hydrophobic biopolymer cutin is a polyester of hydroxy and/or epoxy fatty acids, with the addition of a relatively low amount of glycerol, and sometimes phenolics.

Detailed explanation-4: -The cuticle is a waxy layer secreted by the epidermis on the two surfaces of the leaf. It serves to prevent evaporation of water from the leaf surface.

Detailed explanation-5: -Answer: 6.5 Epidermal Cell makes cuticle.