If you observe, you will see that the roots of all the plants are not the same. The root of a mango or chilli plant is different from that of paddy, corn or grass. Owing to such differences, roots can be mainly divided into two types in terms of their origin and location.
The two types of roots are: 1) Tap root and 2) Adventitious root.
(1) Tap root: The radicle of this type of root grows directly as it goes down the ground and lateral branches grow out of it. For example, the roots of radish, mango, black berry, chili, mustard etc. The roots of dicotyledonous plants are tap roots.
Dicotyledonous plants have two cotyledons. The tap root system is formed by the tap root of a dicotyledonous plant and as lateral roots. The root system of mango, black berry, chili, mustard and nayantara trees have this type of root.
(2) Adventitious root: This type of roots originates not from the radicle rather from the stem and leaf Examples of such roots are the roots of coconut, tap root of a banyan tree and stilt root of screw pine tree. It is of two types – (a) Fibrous root and (b) Non Fibrous root.
- Fibrous root: If you watch the roots of paddy, grass, bamboo etc, you will notice, a group of fibre like roots growing from the stem. These are fibrous root. This type of roots may grow when the radicle is lost and a group of fibre like roots grow from the same place. Examples- roots of paddy, coconut and betel nut plants.
- Non Fibrous root: The adventitious roots that do not grow in a cluster, rather develop separately from one another are non fibrous roots. Example – Stilt root of screw pine, prop root of Banyan tree are of this kind.