What is the role of Epidermis in Plants?

Answer: Epidermis protects against damage, controls water loss, facilitates gas exchange, absorbs nutrients, regulates temperature, and senses environmental changes.

The epidermis in plants is the outermost layer of cells, serving various critical functions essential for plant health and survival:

1. Protection: Shields internal tissues from physical damage, pathogens, and UV radiation.
2. Water Regulation: Minimizes water loss through transpiration due to the presence of a waxy cuticle.
3. Gas Exchange: Epidermis contains stomata for CO₂ intake and O₂ release which is essential for photosynthesis and respiration.
4. Nutrient Absorption: In roots, epidermal cells facilitate the absorption of water and nutrients from the soil.
5. Thermal Regulation: Reflects sunlight, helping to regulate plant temperature and prevent overheating.
6. Sensory Functions: Epidermis has sensory cells that respond to environmental changes and help in plant adaptation.

Also, check out our easy-to-read article on the Epidermal Tissue System, if you want to learn more.