Which of the following is a biofertilizer?

Which of the following is used as a biofertilizer in paddy fields?

Match the following columns:

Column-$I$	Column-$II$
$(a)$ Azospirillum	$(1)$ Symbiotic bacteria
$(b)$ Cyanobacteria	$(2)$ Free-living bacteria
$(c)$ Rhizobium	$(3)$ Mycorrhiza
$(d)$ Glomus	$(4)$ Autotrophic microbe

Which of the following organisms add organic matter to the soil and increase its fertility?

Which fungus is taking part in the formation of mycorrhiza?

$A$ : Azotodesmic lichens are biofertilisers enriching nitrogen contents in soil.
$R$ : This ability is due to the presence of heterocystous blue-green algae as phycobiont component.