The first root to emerge from a germinated seed is the radicle. This radicle, in most dicotyledons, enlarges to form a prominent taproot.
Taproots can serve many functions.
This mass of similarly sized roots are called a fibrous root system . This picture shows the fibrous root system of the rice plant. These roots are extensive and cling to the soil particles and thus are excellent for preventing erosion. Adventitious Roots Adventitious roots are roots which form from organs of the plant other than roots. The stem of the rice plant is the initiation site of the adventitious roots in the above picture.