Question

Match the columns and find the correct answer

	Column I		Column II
(a)	Streptomyces	(p)	Food poisoning
(b)	Rhizobium	(q)	Source of antibiotic
(c)	Nitrosomonas	(r)	Nitrogen fixation
(d)	Acetobacter	(s)	Nitrification
		(t)	Vinegar synthesis

• A. a-s, b-t, c-p, d-r
• B. a-t, b-p, c-r, d-s
• C. a-q, b-r, c-p, d-t
• D. a-q, b-r, c-s, d-t

Answer 1

The correct option is D a-q, b-r, c-s, d-t

Streptomcyes is a bacterium that is source of antibiotics like streptomycin, neomycin. These antibiotics are used in treatment of many bacterial infections. Rhizobium is a symbiotic nitrogen fixing bacteria. It fixes atmospheric nitrogen in association with the leguminous plants and make it available to the plants. Nitrosomonas is a bacterium that is involved in nitrification process. Nitrification is a process in which ammonia is converted into nitrite and nitrate is converted into nitrates. Nitrosomonas converts ammonia into nitrites. Acetobacter is an acetic acid bacteria which is involved in the vinegar synthesis. It converts alcohol into acetic acid.

Thus, the correct answer is 'a-q, b-r, c-s, d-t.'