what is epidermis ?what are the functions of epidermis?
Answers
Explanation:
The epidermis is the outer layer of your skin, and it plays an important role in protecting your body from things like infection, UV radiation, and losing important nutrients and water.
Answer:
The epidermis is a single layer of cells that covers the leaves, flowers, roots and stems of plants. It forms a boundary between the plant and the external environment.
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.
The epidermis of most leaves shows dorsoventral anatomy: the upper (adaxial) and lower (abaxial) surfaces have somewhat different construction and may serve different functions. Woody stems and some other stem structures such as potato tubers produce a secondary covering called the periderm that replaces the epidermis as the protective covering.