NEET Biology question

Biology Mineral Nutrition NEET

Not in NEET syllabus

Select the correctly matched pairs. I. *Nitrosomonas* – Nitrite to nitrate II. *Thiobacillus* – Denitrification III. *Nostoc* – Free-living nitrogen fixer IV. *Azotobacter* – Anaerobic nitrogen fixer

(A)I and II
(B)III and IV
(C)II and IIICorrect
(D)II and IV

Answer: (C)

Solution

*Nitrosomonas* actually oxidises ammonia to nitrite (not nitrite to nitrate, which is *Nitrobacter*'s role), so statement I is incorrect. *Thiobacillus* is indeed a denitrifying bacterium, so II is correct. *Nostoc* is a

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-112747