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CMC Medical CMC-Medical VELLORE Solved Paper-2008

  • question_answer
    Free  living,  aerobic,  non-photosynthetic nitrogen fixing bacterium is

    A)  Azotobacter                     

    B)  E. coli

    C)  Nostoc                                

    D)  Salmonella

    E)  Clostridium

    Correct Answer: A

    Solution :

                    Azotobacter     is    free-living,    aerobic non-photosynthetic nitrogen fixing bacterium. Nostoc is free-living and also symbiotic photosynthetic nitrogen fixing cyanobacteria.


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