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  • Which of the following is a free living aerobic nitrogen ...
Multiple choice

Which of the following is a free living aerobic nitrogen fixer?

  1. Staphylococcus

  2. Azotobacter

  3. Streptococcus

  4. Nitrobacter

  5. Penicillium

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Azotobacter is a free living aerobic N2 fixer.

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