MCQ
Azolla is used as a biofertilizer, because it:
  • A
    Multiplies very fast to produce massive biomass
  • B
    Has association of nitrogen$-$fixing Rhizobium
  • Has association of nitrogen$-$fixing Cyanobacteria
  • D
    Has association of Mycorrhiza

Answer

Correct option: C.
Has association of nitrogen$-$fixing Cyanobacteria

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