Mention the characteristics of root system. Add a note on its function.

Explanation

Characteristics of root system :-
1. Roots is underground and positively geotropic or negatively phototropic.
2. Root is non-chlorophyllous and brown in colour.
3. Root is not differentiated into nodes and internodes.
4. Lateral roots are formed endogenously.
5. Root does not bear leaves and true buds.
6. Root apex is protected by a root cap.
7. Root bear unicellular root hairs.
Basic functions of the root :
1. The root system provides fixation or anchorage for the plant, into the soil.
2. Absorption of water and mineral ions from the soil is carried out by the root.
3. The root conducts the absorbed water and mineral salts from the root hairs to the rest of the plant body. This function is performed through cortex, endodermis and xylem.
4. Food materials are stored in the roots of many plants. This is done in the parenchyma cells of the cortex.