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Nitrogen Cycle

A nitrogen-fi...

Question

A nitrogen-fixing bacterium, which forms a loose association with the roots of crop plants (grasses) is

A

Azotobacter

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B

Bacillus polymyxa

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C

Clostridium

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D

Azospirillum

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Solution

The correct option is D Azospirillum
Azospirillum is a free-living nitrogen-fixing bacteria closely associated with crops of grass family
So, the correct answer is 'Azospirillum'

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