Azolla is used as a biofertilizer because it [AIIMS 2003] – McqOptions

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1.	Azolla is used as a biofertilizer because it [AIIMS 2003]
A.	Multiplies very fast to produce massive biomass
B.	Has association of nitrogen-fixing Rhizobium
C.	Has association of nitrogenfixing cyanobacteria
D.	Has association of mycorrhiza
Answer» D. Has association of mycorrhiza

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