Which of the following bacteria is associated | vedclass

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(A, B, D) Nitrogen fixation is the process of converting atmospheric nitrogen $(N_2)$ into ammonia $(NH_3)$,which can be utilized by plants.Many bacte

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Azotobacter

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(A, B, D) Nitrogen fixation is the process of converting atmospheric nitrogen $(N_2)$ into ammonia $(NH_3)$,which can be utilized by plants.Many bacteria are capable of nitrogen fixation.$Nostoc$,$Anabaena$,and $Azotobacter$ are all well-known nitrogen-fixing bacteria.However,in the context of multiple-choice questions where only one answer is expected,if the question implies a single choice,it is often flawed if multiple options are correct.Given the options,$Nostoc$,$Anabaena$,and $Azotobacter$ are all nitrogen fixers.If this is a multiple-correct question,$A$,$B$,and $D$ are correct.If it is a single-choice question,please note that all three are valid examples.

Column-$I$	Column-$II$
$P$. Phosphorus	$I$. Splitting of water to liberate oxygen during photosynthesis
$Q$. Potassium	$II$. Constituent of cell membranes and all nucleotides
$R$. Magnesium	$III$. In more abundant quantities in the meristematic tissue,buds,leaves,and root tips
$S$. Manganese	$IV$. Constituent of the ring structure of chlorophyll and helps to maintain the ribosome structure

Which of the following bacteria is associated with nitrogen fixation?

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