Question
Question: Azolla is used as a biofertilizer because it...
Azolla is used as a biofertilizer because it
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
Has association of nitrogenfixing cyanobacteria