Question

Match the following

	Column I		Column I
A.	Cuscuta	(i)	Hygroscopic root
B.	Rhizophora	(ii)	Stilt root
C.	Vanda	(iii)	Haustorial root
D.	Pandanus	(iv)	Respiratory root

• A. A (i), B (iii), C (iv), D (ii)
• B. A (iii), B (iv), C (i), D (ii)
• C. A (iii), B (i), C (iv), D (ii)
• D. A (ii), B (iv), C (i), D (iii)

Answer 1

The correct option is B A (iii), B (iv), C (i), D (ii)

Haustorium is a highly modified stem or root of a parasitic plant, such as mistletoe or dodder, or a specialized branch or tube originating from a hairlike filament (hypha) of a fungus. The haustorium penetrates the tissues of a host and absorbs nutrients and water. Cuscuta is a parasitic plant and haustorium in present in this kind of plants.

Respiratory roots are found in aquatic plants and plants which grow in marshy areas. Rhizophora is a genus of tropical mangrove trees and they possess respiratory roots.

Hygroscopic roots are a type roots which absorb water from the atmosphere. Hygroscopic roots occur in Vanda because it is an epiphyte which absorbs moisture from the atmosphere as its source of water.

Stilt roots are the adventitious roots that help in supporting the plant body. Pandanus possess stilt roots.