What is the genus of potato and brinjal?

What is a Kingdom?

Statement $A$: $A$ genus includes more than one species.
Reason $R$: An extinct human species is $Homo\, erectus$.
Which option is correct for Statement $A$ and Reason $R$?

Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?

Describe various categories of taxonomical studies.

What do we learn from the identification of individuals and populations?