Azolla is used as a biofertilizer because it:
Correct answer: A. Has association nitrogen fixing Cyanobacteria
- A. Has association nitrogen fixing Cyanobacteria
- B. Has association of nitrogen-fixing Rhizobium
- C. Multiplies very fast to produce massive biomass
- D. Has association of mycorrhiza
Explanation
Azolla contains a symbiotic nitrogen-fixing cyanobacterium, commonly identified as Anabaena azollae. This association enriches the biomass with nitrogen and makes Azolla useful as a biofertilizer.
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