Question

The modified supporting roots called prop roots and stilt roots are seen respectively in
(i) Banyan and Maize
(ii) Banyan and Sugarcane
(iii) Maize and Banyan
(iv) Sugarcane and Maize.
A. i only
B. ii only
C. iii only
D. i and ii only
E. i and iv only

Answer 1

Hint: The prop roots are quite long and pass down into the soil in a vertical position. Stilt roots are comparatively short and develop at an oblique angle to the stem.

Complete answer:
There are various types of modified roots are found in plants namely they are prop root, stilt roots, pneumatophores (respiratory roots), buttress root, the fleshy root which helps in storing food, fleshy adventitious roots, etc. The roots which develop from the upper part of the stem(mainly from the horizontal branches)are called prop roots. The prop roots are the characteristic feature of the Banyan tree. The roots which develop from the basal nodes of the main stem are known as slit roots. These roots are also known as brace roots. The roots of the Banyan tree are very eye-catching. Stilt roots are found in both maize and sugarcane plants and it is also found in bamboo and pine.
So, the correct option is D, i.e., i and ii only

Additional Information
-Fleshy roots which are stored food are categories into conical fleshy roots, fusiform fleshy roots, napiform fleshy roots, tuberous roots.
-The pneumatophores are the respiratory roots found in Rhizophora, Sonneratia mainly in marshy areas and help in gaseous exchange.

Note: Another important feature of the prop roots is that they are quite thick, massive, and can replace the trunk or main stem. But the stilt roots are less thick and hence cannot replace the main stem.