The document summarizes plant anatomy, specifically focusing on the epidermis and epidermal emergences. It defines the epidermis as the outermost cell layer covering plant leaves, stems, flowers and roots. The epidermis functions to protect the plant, regulate gas exchange, secrete compounds, and absorb water and nutrients. Epidermal emergences are sharp projections that serve as adaptations against predation. Examples discussed include root hairs, spines, trichomes, and prickles. Emergences function to protect plants from animals.