Question

Match the columns and choose the correct answer.

	I		II
(p)	Thiobacillus	(i)	Nitrogen fixation
(q)	Nitrosomonas	(ii)	Ammonification
(r)	Azotobacter	(iii)	Nitrification
(s)	Pseudomonas	(iv)	Denitrification

• A. p-iv, q-iii, r-i, s-ii
• B. p-iii, q-v, r-i, s-ii
• C. p-iv, q-ii, r-i, s-iii
• D. p-ii, q-i, r-iii, s-iv

Answer 1

The correct option is A p-iv, q-iii, r-i, s-ii

a) Thiobacillus - This bacteria helps in the denitrification process

b) Nitrosomonas - This is a nitrifying bacteria that helps in nitrification.

c) Azotobacter - It is a free nitrogen-fixing bacteria which helps in Nitrogen fixation.

d) Pseudomonas - It is a decay-causing bacteria that help in Ammonification.

So the correct answer is 'p-iv, q-iii, r-i, s-ii'.