Question

What is epidermis and its functions in different types of plants ?​

Answer 1

Answer: Epidermis protects against water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients.

Explanation:

Answer 2

In plants, epidermis is the outer covering part which is in direct contact with the external environment. This part of plant is associated with stomata.

━━━━━━━━━━━━

Functions of epidermis:

1. It provides protection to the plant.
2. Epidermis reduces the evaporation of water.
3. Gaseous exchange in plant takes place through the stomata present on epidermis.
4. Root hairs help in absorption of water and minerals.
5. They also help in secretion.

━━━━━━━━━━━━━━━━

More to know :

• Epidermis is generally made up of single layred living cells.
• They constitute mainly parenchymatous cells
• The cells are arranged in compact form, making a continuous layer.
• The outer walls of epidermis is thicker
• The inner walls are comparatively thinner.
• Sometimes a waxy coating may be present on it.
• The multiple epidermis is modified into velamen.
• This velamen can absorb water from atmosphere.
• In dry condition the cells loose water and help in rolling of leaves, reducing water loss by transpirtation.