Question

Differentiate between: 

(i) Prop roots and stilt roots 

(ii) Tuberous root and Fasciculated roots 

(iii) Respiratory and Assimilatory roots.

Answer 1

(i) Prop roots and stilt roots

S. NO.	Prop roots	Stilt roots
(i)	Arise from horizontal aerial branches of a tree.	Arise from basal nodes of stem.
(ii)	Long and provide support to the plants like pillars. E.g., Banyan tree.	Short roots and grow downwards obliquely to provide support to stem like ropes of a tent. E.g., Maize, jowar.

(ii) Tuberous root and Fasciculated roots

S.NO.	Tuberous	Fasciculated roots
(i)	Modified tap or adventitious root.	Modified adventitious root.
(ii)	Occurs singly.	Occurs in groups.
(iii)	E.g., Mirabilis (tap root) and lpomea (adventitious roots)	E.g., Asparagus and Dahlia

(iii) Respiratory and Assimilatory roots.

S.NO.	Respiratory roots	Assimilatory roots
(i)	Occurs in plants growing in swamps and mangroves.	Found in the plants growing in aquatic, terrestrial and epiphytic habitats.
(ii)	Non-green and non- photosynthetic.	Green as well as photosynthetic.
(iii)	Bear lenticels for exchange of gases.	General body acts as organ gaseous exchange.