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      Question

      Which of the following micro-organism used for nitrogen

      fixation and is micro aerophillic
      A Azotobacter Correct Answer Incorrect Answer
      B Rhizobium Correct Answer Incorrect Answer
      C Azospirillum Correct Answer Incorrect Answer
      D Nostoc Correct Answer Incorrect Answer

      Solution

      Azospirillum is micro aerophillic ( it needs less oxygen concentration than aerobic microbes to survive) is used for nitogen fixation in wheat crop.

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