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UPSC Biology Biological Classification And System Of Classification / जैविक वर्गीकरण और वर्गीकरण की प्रणाली Question Bank Biology Classification/ Cell & Its Division

  • question_answer
          Which one of the following is a free living bacterium that helps in nitrogen fixation in soil? [CDS]

    A) Azotobacter

    B)          Anabaena

    C) Azolla                   

    D)          Nostoc

    Correct Answer: A

    Solution :

    Not Available      


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