Select the incorrect option from the following.

Which of the following taxonomic categories contains organisms least similar to one another?

Assertion $(S)$: Kingdom is the largest taxonomic category.
Reason $(R)$: The major group that includes all other groups is called a Kingdom.
$(a)$ Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.
$(e)$ Both $S$ and $R$ are false.

Define the following terms:
$(i)$ Variations
$(ii)$ Nomenclature

Order being a higher category,is the assemblage of................. which exhibit a few similar characters.

In binomial nomenclature,the first name represents: