Which of the following is true for nitrogen f | vedclass

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(D) Biological nitrogen fixation is the process by which atmospheric nitrogen $(N_2)$ is converted into ammonia $(NH_3)$ by living organisms,primarily

Vedclass · Accepted Answer

Both $(A)$ and $(B)$

Vedclass · Answer

(D) Biological nitrogen fixation is the process by which atmospheric nitrogen $(N_2)$ is converted into ammonia $(NH_3)$ by living organisms,primarily bacteria like $Rhizobium$,$Azotobacter$,etc.Some bacteria also convert nitrogen into nitrates $(NO_3^-)$ through the process of nitrification,which is a part of the nitrogen cycle.Therefore,both the conversion of nitrogen to ammonia (fixation) and the conversion to nitrates (nitrification) are essential steps in the nitrogen cycle related to nitrogen availability for plants.Thus,the correct option is $D$.

Column $I$	Column $II$
$A$. Thiobacillus	$1$. Free-living nitrogen-fixing cyanobacteria
$B$. Nitrosomonas	$2$. Denitrification
$C$. Nostoc	$3$. Free-living aerobic nitrogen-fixing bacteria
$D$. Azotobacter	$4$. $NH_{3}$ to Nitrite

Which of the following is true for nitrogen fixation?

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