What is meant by modification of root? What type of modification of root is found in the:
$(a)$ Banyan tree
$(b)$ Turnip
$(c)$ Mangrove trees

(N/A) Modification of root refers to the structural changes in roots to perform functions other than the primary functions of absorption and conduction of water and minerals. These functions include food storage,mechanical support,and respiration.
$(a)$ Banyan tree: These plants exhibit prop roots. These are adventitious roots that arise from the branches and grow downwards to provide mechanical support to the heavy,spreading tree.
$(b)$ Turnip: These plants exhibit storage roots. The tap root becomes fleshy and swollen to store food reserves.
$(c)$ Mangrove trees: These plants exhibit pneumatophores. These are specialized roots that grow vertically upwards (negatively geotropic) from the soil to facilitate the exchange of gases (respiration) in waterlogged,anaerobic soil conditions.