Types of roots. With example

There are three types of root system, viz. tap root system, fibrous root system and adventitious root system.

1. Tap Root System: This type of root system is mainly present in dicotyledonous plants. Direct elongation of the radicle results in formation of primary root. The primary root bears secondary, tertiary, etc. roots. The primary root; along with its branches; makes the tap root system, e.g. mustard, banyan, etc.
2. Fibrous Root System: This type of root system is mainly present in monocotyledonous plants. The primary root is short lived after germination. This is replaced by a large number of roots and all of them emerge from the base of the stem. Such roots constitute the fibrous root system, e.g. wheat, paddy, grass, etc.
3. Adventitious Roots: Sometimes, roots arise from some other plant parts (other than radicle). Such roots are called adventitious roots. Adventitious roots are used for various purposes; like vegetative propagation, mechanical support, etc.