(i) Tap root : The roots which develops from radicle along with its branches is termed as tap root. Secondary root develops from tap root.
(ii) Fibrous Root : In monocot plants, the primary root is short lived and is replaced by roots that arise from the stem. These roots constitute the fibrous roots.
(iii) Adventitious root: Roots which arise from other part of the plant except radical, are termed as adventitious roots.