Question

Match the organisms in column I with habitats in column II:

	Column I		Column II
(a)	Halophiles	(i)	Hot spring
(b)	Thermoacidophiles	(ii)	Aquatic environment
(c)	Methanogens	(iii)	Guts of ruminants
(d)	Cyanobacteria	(iv)	Salty area

• A. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
• B. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
• C. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
• D. (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

Answer 1

The correct option is A (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)

Halophiles can be found in salty areas where salt concentration is very high.

A thermoacidophile is an extremophilic microorganism that is both thermophilic and acidophilic i.e., it can live under conditions of high temperature and low pH.

Methanogens are microorganisms that produce methane as a metabolic byproduct in hypoxic conditions. It is found in guts of ruminants.

Cyanobacteria are a group of photosynthetic bacteria, some of which are nitrogen-fixing, that live in a wide variety of moist soils and water either freely or in a symbiotic relationship with plants or lichen-forming fungi. They can also be found in aquatic environments.