Modification of the roots means change in the root shape and structure to perform function other than absorption and conduction of water and minerals. Roots are modified to perform specialised functions like support, storage of food and respiration.

Roots and its modifications in various plants:
(a) Banyan tree
The banyan tree has prop roots. Prop roots are massive pillar-like adventitious roots arising from the aerial part of the stem. These roots grow towards the ground and provide support to the tree.

(b) Turnip
The tap roots of turnip swell and help in the storage of food.

(c) Mangrove tree
The roots modification found in mangroves are pneumatophores. The roots grow vertically upwards from the soil for the absorption of oxygen from the atmosphere as the soil is poorly aerated