Gujarati
8.Microbes in Human Welfare
medium

Which of the following is free living aerobic and nonphotosynthetic nitrogen fixing bacterium

A

Rhizobium

B

Nostoc

C

Azospirillum

D

Azotobacter

(AIPMT-1997) (AIPMT-1998)

Solution

It’s obvious.

Standard 12
Biology

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