Which fungus is taking part in the formation of mycorrhiza?

Which of the following is the most suitable fertilizer for paddy fields?

What is the function of the fungus $Glomus$ as a symbiont?

Which of the following pairs is correct for biofertilizers?

Which aquatic fern is considered a very good biofertilizer?

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