$A$ nitrogen-fixing microbe associated with $Azolla$ in rice fields is

  • A
    Spirulina
  • B
    Anabaena
  • C
    Frankia
  • D
    Tolypothrix

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Similar Questions

Which of the following is a biofertilizer?

The main sources of biofertilisers are:
$(a)$ Bacteria
$(b)$ Cyanobacteria
$(c)$ Fungi
$(d)$ Protists

Which nitrogen-fixing microorganism is associated with Azolla in paddy fields?

Farmers have reported over $50\%$ higher yields of rice by using which of the following biofertilizer?

Azolla is used as a biofertilizer because it

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