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Question: Answered & Verified by Expert
Azolla is used as a biofertilizer because it
BiologyMineral NutritionAIIMSAIIMS 2003
Options:
  • A multiplies very fast to produce massive biomass
  • B has association of nitrogen - fixing Rhizobium
  • C has association of nitrogen - fixing cyan obacteria
  • D has association of mycorrhiza.
Solution:
1115 Upvotes Verified Answer
The correct answer is: has association of nitrogen - fixing cyan obacteria
Azolla is a pteridophyte and used as a biofertilizer because it has association with nitrogenfixing cyanobacteria Anabaena azollae.

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