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(C) The correct answer is $C$. Bacteria play the most active role in the nitrogen cycle through various processes:$1$. Nitrification: Ammonium compoun

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Bacteria

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(C) The correct answer is $C$. Bacteria play the most active role in the nitrogen cycle through various processes:$1$. Nitrification: Ammonium compounds are oxidized into nitrates in two stages. First,nitrite bacteria (e.g.,$Nitrosomonas$) oxidize ammonia into $NO_2^-$. Second,nitrate bacteria (e.g.,$Nitrobacter$) oxidize $NO_2^-$ into $NO_3^-$,which plants can absorb.$2$. Nitrogen Fixation: Bacteria like $Rhizobium$ (in root nodules of legumes),$Azotobacter$,and cyanobacteria fix atmospheric nitrogen into organic forms.$3$. Denitrification: Bacteria like $Pseudomonas$ convert nitrates back into atmospheric nitrogen $(N_2)$,completing the cycle.

The organisms which participate most actively in the nitrogen cycle in nature are

Similar Questions

Which of the following bacteria are responsible for the process of denitrification?

Define the following terms:
$(1)$ Ammonification
$(2)$ Nitrogen Fixation

Which bacteria convert ammonium salts into nitrite?

Which bacteria are responsible for the conversion of ammonia into nitrite ions and nitrite into nitrate ions,respectively?

The bacteria which convert $NO_3^- \rightarrow$ free $N_2$ are called as:

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