Relation between bacteria and legume having nodulated roots is that of
Host-parasitism
Commensalism
Symbiosis
Epiphytism
The main sources of biofertilisers are
$(a)$ Bacteria
$(b)$ Cyanobacteria
$(c)$ Fungi
$(d)$ Protists
Assertion : Leguminous plants are nitrogen fixers.
Reason : Leguminous plants have Rhizobium in their root nodules.
Biofertilizers include
The biofertilizer present in the roots of legumes is
Organic forming does not include