Which taxonomic term may be suggested for any rank in the classification?

What is the genus of potato and brinjal?

The common taxonomic categories are given below. Arrange them in the correct sequence starting from the smallest unit:
$(i)$ Genus $(ii)$ Family $(iii)$ Species $(iv)$ Order $(v)$ Subspecies

Which of the following $statement(s)$ is/are not correct?
$(i)$ Genus comprises a group of related species which has more characters in common in comparison to species of other genera.
$(ii)$ Three different genera such as $Solanum$,$Datura$ and $Petunia$ are placed in the family $Malvaceae$.
$(iii)$ In case of plants,classes with a few similar characters are assigned to a higher category called phylum.

Choose the correct pair (Genus - Family).

Read the following statements:
$(i)$ Lower the taxon, more are the characteristics that the members within the taxon share.
$(ii)$ Order is the assemblage of genera which exhibit a few similar characters.
$(iii)$ Cat and dog are included in the same family Felidae.
$(iv)$ Binomial Nomenclature was introduced by Carolus Linnaeus.
Which of the following statements are $NOT$ correct?