Which of the following fungi is unicellular?

$Penicillium\, roquefortii$ and $P. camemberti$ are used in the production of cheese. To which class do these fungi belong?

In $Rhizopus$,sexual fusion takes place between

The mode of nutrition in all fungi is .......... .

Select the correct option for the following statements:
$(i)$ The symbiotic association of fungi with algae is called $Lichens$ / $Mycorrhiza$.
$(ii)$ $Puccinia$ is the fungus responsible for $Rust$ / $Smut$.

In which of the following is the cell wall composed of cellulose or fungal-cellulose?