Question

    Which of the following is a free-living aerobic nitrogen

    fixing bacteria?
    A Cyanobacteria Correct Answer Incorrect Answer
    B Rhizobium Correct Answer Incorrect Answer
    C Azotobacter Correct Answer Incorrect Answer
    D B Circulans Correct Answer Incorrect Answer

    Solution

    Azotobacter is a free-living aerobic nitrogen fixing bacteria

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