AP BIOLOGY

Detailed explanation-1: -epidermis, in botany, outermost, protoderm-derived layer of cells covering the stem, root, leaf, flower, fruit, and seed parts of a plant. The epidermis and its waxy cuticle provide a protective barrier against mechanical injury, water loss, and infection.

Detailed explanation-2: -Complete answer: The protective tissues in plants consist of epidermis and cork (phellem). > Epidermis: It is the outer covering of cells in plants.

Detailed explanation-3: -In the aerial parts, epidermal cells synthesize and secrete cutin, a lipidic impermeable substance deposited outside of the cell wall to form a continuous layer known as cuticle. This external layer prevents the water lost and is a barrier against pathogens.

Detailed explanation-4: -The plant epidermis consists of three main cell types: pavement cells, guard cells and their subsidiary cells that surround the stomata and trichomes, otherwise known as leaf hairs.

Detailed explanation-5: -The epidermis is composed of stratified squamous epithelium of the keratinized type.