What is the role of epidermis in(a) Aerial parts of plant (b) Roots (c) Desert plants (d) Leaves
Answers
Answer:
(a) Epidermis forms a barrier between the internal tissues of the aerial parts of the plant and the external environment. Hence, serves as skin of the plant protecting the parts of the plant from the injuries. b) In leaves, epidermis prevents the water loss and acts as a layer between outer and inner leaf.
(b) The epidermis serves several functions: it protects against water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients.
(c) Cells of epidermis form a continuous layer without intercellular spaces. It protects all the parts of the plant. It performs the function of absorption in the roots. It may have a waxy covering called cutin which prevents loss of water in desert plants.
(d) 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.