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    Question

    Which one of the following is aerobic asymbiotic

    N₂-fixing bacteria?
    A Rhizobium Correct Answer Incorrect Answer
    B Frankia Correct Answer Incorrect Answer
    C Clostridium Correct Answer Incorrect Answer
    D Azotobactor Correct Answer Incorrect Answer

    Solution

    Azotobacter is a genus of free-living bacteria that can fix atmospheric nitrogen in the absence of a symbiotic relationship with plants. It is capable of carrying out nitrogen fixation aerobically, meaning it can fix nitrogen in the presence of oxygen.

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