Multiple choice

Which of the following is a nitrogen fixing cynobacteria?

  1. Clostridium

  2. Rhizobium

  3. Anabaena

  4. Azotobacter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Anabaena is a genus of filamentous cyanobacteria that is capable of nitrogen fixation, often found in symbiotic associations with plants like Azolla.

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