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NEET2022BotanyMineral NutritionActual

Which of the following pair represents free living nitrogen fixing aerobic bacteria?

Options

  1. ARhizobium and Frankia
  2. BAzotobacter and Beijerinckia
  3. CAnabaena and Rhodospirillum
  4. DPseudomonas and Thiobacillus

Correct answer

B. Azotobacter and Beijerinckia

Step-by-step solution

Azotobacter and Beijerinckia are free living, N ₂ fixing, Aerobic bacteria. Rhizobium and Frankia are associated bacteria. Pseudomonas and Thiobacillus are denitrifying bacteria while Rhodospirillum is anaerobic non, N ₂ Fixing bacteria.

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