AP BIOLOGY

Detailed explanation-1: -Answer: 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.

Detailed explanation-2: -The cuticles are protective, hydrophobic, waxy coverings produced by the epidermal cells of leaves, young shoots and all other aerial plant organs. Cuticles minimize water loss and effectively reduce pathogen entry due to their waxy secretion.

Detailed explanation-3: -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.

Detailed explanation-4: -The correct option is D cutin. Cutin is a major component of the cuticle, the waxy layer of the epidermis. Cuticle acts as a protective layer and also prevents water loss through the leaves of the plant.

Detailed explanation-5: -Cuticle: It is the waxy layer on the epidermis of the leaves meant to reduce transpiration.