Match List-I with List-II:

- A(a)-(iii); (b)-(i); (c)-(iv); (d)-(ii)
- B(a)-(iv); (b)-(iii); (c)-(ii); (d)-(i)
- C(a)-(ii); (b)-(iv); (c)-(i); (d)-(iii)
- D(a)-(i); (b)-(ii); (c)-(iii); (d)-(iv)
Solution & Step-by-step Explanation
Nitrococcus: Converts ammonia to nitrite (ii).Rhizobium: Performs symbiotic nitrogen fixation () (iv).Thiobacillus: Performs denitrification (i).Nitrobacter: Converts nitrite to nitrate (iii).Sequence: (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii).