Nitrogen Cycle

- Ammonification (A): The conversion of organic nitrogen (from dead organisms) into ammonium (NH

_4%5E%2B

) is called ammonification.
- Denitrification (B): The process where nitrate (NO

_3%5E-

) is reduced to nitrogen gas (N

_2

), releasing it into the atmosphere.
- Nitrification (C): The conversion of ammonia (NH

_3

) into nitrate and nitrite by nitrifying bacteria.
- Nitrogen fixation (D): The process of converting atmospheric nitrogen (N

_2

) into ammonia (NH

_3

) by nitrogen-fixing bacteria.
Step 2: Conclusion.
Thus, the correct matching is:

%5Ctext%7B(A)%20(II)%2C%20(B)%20(III)%2C%20(C)%20(IV)%2C%20(D)%20(I)%7D

Final Answer:

%5Cboxed%7B%5Ctext%7B(A)%20(II)%2C%20(B)%20(III)%2C%20(C)%20(IV)%2C%20(D)%20(I)%7D%7D

Chapter Questions
1 MCQs