Which of the following is regarded as the $Drosophila$ of the fungal world?

Gametangial copulation $(conjugation)$ is common in

$(A)$ Heterotrophic organism
$(B)$ Show a great diversity in morphology and habitat
$(C)$ Can show association with plants
$(D)$ Dikaryotic phase seen in their life cycle
$(E)$ All members are coenocytic
Choose the option which have all the correct statements (from above $A$ to $E$) for kingdom Fungi $:-$

Ainsworth has placed $Rhizopus$ in which of the following groups?

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

The negatively geotropic and unbranched hyphae in $Rhizopus$ are known as: