Which of the following is included in the multicellular decomposer kingdom?

The multinucleated filament of $Rhizopus$ is known as:

Assertion $(A)$: In bread mold $(Rhizopus)$,sexual reproduction does not result in the formation of an embryo.
Reason $(R)$: In sponges $(Porifera)$,the cell wall is made of cellulose.

The reserve food material in fungi is:

Is the common edible mushroom an autotroph or a heterotroph?

Haustoria are found in