Some detail about Types of tissue systems in a plant

Types of tissue  systems in a plant

            The tissue system is classified into three main types. 1) The dermal or epidermal tissue system 2) The fundamental or ground tissue system and 3) The vascular tissue system.

Dermal system_definition and function

          The plant body is covered by a layer called dermal system. In the aerial parts of the plant, the outer walls of the epidermis have a waxy covering called the cuticle.

Function of dermal system 

1. It protects the internal tissues from mechanical injury and heat or cold

2. It prevents the evaporation of water with the help of the thick cuticle and wax. 

3. The epidermis also protects the plant against the attack of herbivorous animals. 

4. This layer stores water in many xerophytic plants.

5. Some of the epidermal cells develop into absorbing hairs of roots.