In the nitrogen cycle,which of the following | vedclass

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(B) $Nitrobacter$ plays a crucial role in the nitrogen cycle. It is a chemoautotrophic bacterium that oxidizes nitrites $(NO_2^-)$ into nitrates $(NO_

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Nitrobacter

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(B) $Nitrobacter$ plays a crucial role in the nitrogen cycle. It is a chemoautotrophic bacterium that oxidizes nitrites $(NO_2^-)$ into nitrates $(NO_3^-)$,which are the forms of nitrogen most easily absorbed by plants.This process is a vital part of nitrification,ensuring that nitrogen is available in the soil for plant uptake.Once plants absorb these nitrates,nitrogen enters the food chain and moves from producers to consumers (herbivores and carnivores),thus maintaining the nitrogen cycle.

Column-$I$	Column-$II$
$I$. Nitrosomonas	Nitrite to nitrate
$II$. Thiobacillus	Denitrification
$III$. Nostoc	Free-living nitrogen fixer
$IV$. Azotobacter	Anaerobic nitrogen fixer

In the nitrogen cycle,which of the following plays an important role?

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Study the nitrogen cycle process shown below and select the option that correctly identifies the four blanks $A, B, C,$ and $D$ in the context of nitrogen transformation.

Choose the correct pair:
Column-$I$ Column-$II$
$I$. Nitrosomonas Nitrite to nitrate
$II$. Thiobacillus Denitrification
$III$. Nostoc Free-living nitrogen fixer
$IV$. Azotobacter Anaerobic nitrogen fixer

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