NEET 2021 Biology question

Match Column-I with Column-II. Column-I: (a) Rhizobium (b) Nitrococcus (c) Thiobacillus (d) Nitrobacter Column-II: (i) Denitrification (ii) Conversion of atmospheric nitrogen to ammonia (iii) Conversion of nitrite to nitrate (iv) Conversion of ammonia to nitrite Choose the correct answer from options given below.

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