Q. In nitrogen cycle , soil nitrates are transformed into free nitrogen by
Solution:
- Denitrification completes the nitrogen cycle by converting nitrate (NO3-) back to gaseous nitrogen (N2). Denitrifying bacteria are the agents of this process.
- These bacteria use nitrate instead of oxygen when obtaining energy, releasing nitrogen gas to the atmosphere.
- Micrococcus denitrificans, and some species of Serratia, Pseudomonas, and Achromobacter.
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