............... has a group of related genera.

Three different genera $Solanum$,$Petunia$,and $Datura$ are placed in the family:

$A$ genus having many species is known as

Which of the following is the order of maize?

The scientific naming of animals is based on the principles and criteria provided by which organization?

Assertion $-A$: The term 'genus' is a single term.
Reason $-R$: $A$ genus may have one or more species; a species may be a single or a combined term.