Question

The diagram shows some stages in the Nitrogen cycle. Which of the following stages involve the role of bacteria.

Answer 1

The 'Ammonia compounds' stage involves the role of bacteria.

After nitrogen fixation, roots of plants absorb the nitrate. In the plant, they are in the form of protein and nucleic acids. After those animals eat these plants who break them down.When animals die this waste decays and bacteria consumes the dead organic matter. As a result, nitrogen is in the form of ammonium(NH4).