Match the following columns

Column I (Bacteria)	Column II (Function)
a. Nitrobacteria	1. Fixation of atmospheric nitrogen
b. Ammonifying bacteria	2. Formation of NH4+ nitrogen
c. Denitrifying bacteria	3. Formation of NO3- nitrogen
d. Rhizobium sp.	4. Formation of NO2 nitrogen

A. a-3, b-4, c-1, d-2

B. a-1, b-2, c-4, d-3

C. a-3, b-2, c-4, d-1

D. a-4, b-1, c-2, d-3

Answer: Option C

Solution(By Examveda Team)

Nitrobacteria are obligate aerobes. It plays an important role in the nitrogen cycle by oxidizing nitrite (NO₃^-) into nitrate and ultimately nitrogen in the soil.

Ammonifying bacteria convert ammonia into atmospheric nitrogen.

Denitrifying bacteria results in the conversion of nitrates in the soil to free atmospheric nitrogen.

Rhizobium species are a group of bacteria that helps in fixing atmospheric nitrogen in plants.