Epidermisis present on the outer surface of the entire plant body which perform following role:
→ It is a protective tissue of the plant body.
→ It protects the plant against mechanical injury.
→ It allows exchange of gases through the stomata.
The functions of stomata are:
→ The exchange of gases (CO2 and O2) with the atmosphere.
→ The loss of excess water in the form of water vapour which is known as transpiration.
Tissue is a group of cells that are similar in structure and are organized together to perform a specific task.