The phosphorus-rich fertilizer obtained from sea birds along the coast of Chile and Peru is:

What is $Glomus$?

Mycorrhiza is a symbiotic association between which of the following?
$(i)$ Fungi of the genus $Glomus$
$(ii)$ $Rhizobium$
$(iii)$ Root nodules of leguminous plants
$(iv)$ Cyanobacteria
$(v)$ Roots of higher plants
$(vi)$ Paddy fields

Some blue-green algae can be used as biofertilizers because they are:

Select the incorrect option from the following.

Which of the following is the pair of biofertilizers?