A) Nitrosomonas
B) Pseudomonas
C) Nitrobacter
D) Nitrococcus
Correct Answer: B
Solution :
Denitrification is a chemical process in which nitrates in the soil are reduced to molecular nitrogen, which is released into the atmosphere. This process is affected by denitrifying bacteria, eg, Pseudomonas denitrificans, which use nitrates as a source of energy for other chemical reactions in a manner similar to respiration in other organisms.
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