What is $Aspergillus$ $niger$?

Choose the correct pair:

Which one is known as the 'Drosophila of the plant kingdom' or a 'laboratory weed' in genetics?

Which of the following statement$(s)$ is/are correct about class Basidiomycetes?
$(i)$ They are commonly known as imperfect fungi because only the asexual or vegetative phases of these fungi are known.
$(ii)$ They grow in soil,on logs and tree stumps.
$(iii)$ They live inside plant bodies as parasites,e.g.,rusts and smuts.
$(iv)$ Some common members are Agaricus,Ustilago,and Puccinia.

Plasmogamy is the fusion of