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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

In the given nitrogen cycle,which process represents denitrification?

Which of the following bacteria reduce nitrate in soil into nitrogen?

Reaction carried out by $N_{2}$ metabolising microbes include:
$I.$ $2 NH_{3} + 3 O_{2} \rightarrow 2 NO_{2}^{-} + 2 H^{+} + 2 H_{2} O$
$II.$ $2 NO_{2}^{-} + O_{2} \rightarrow 2 NO_{3}^{-}$
Which of the following statements about these equations is not true?

Which bacteria is responsible for the reduction of nitrates into nitrogen in soil?

Which organisms actively participate in the nitrogen cycle in nature?

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