(N/A) $(i)$ Species:
$\rightarrow$ Taxonomic studies consider a group of individual organisms with fundamental similarities as a species,which are distinct based on morphological differences.
$\rightarrow$ Example: $Mangifera$ $indica$,$Solanum$ $tuberosum$ (potato),and $Panthera$ $leo$ (lion).
$\rightarrow$ The words $indica$,$tuberosum$,and $leo$ represent the specific epithets,while $Mangifera$,$Solanum$,and $Panthera$ are genera,representing a higher level of taxon or category.
$\rightarrow$ Each genus may have one or more than one specific epithet representing different organisms that share morphological similarities.
$\rightarrow$ For example,$Panthera$ has another specific epithet called $tigris$,and $Solanum$ includes species like $nigrum$ and $melongena$.
$\rightarrow$ Human beings belong to the species $sapiens$,which is grouped in the genus $Homo$.
$\rightarrow$ The scientific name for human beings is written as $Homo$ $sapiens$.
$(ii)$ Genus:
$\rightarrow$ Genus comprises a group of related species which have more characters in common in comparison to species of other genera.
$\rightarrow$ Genera are aggregates of closely related species.
$\rightarrow$ For example,potato and brinjal are two different species but both belong to the genus $Solanum$. Lion ($Panthera$ $leo$),leopard ($P.$ $pardus$),and tiger ($P.$ $tigris$) are all species of the genus $Panthera$.
$\rightarrow$ This genus differs from the genus $Felis$,which includes cats.
$(iii)$ Family:
$\rightarrow$ Family consists of a group of related genera with fewer similarities compared to genus and species.
$\rightarrow$ Families are characterized on the basis of both vegetative and reproductive features of plant species.
$\rightarrow$ Among plants,for example,three different genera $Solanum$,$Petunia$,and $Datura$ are placed in the family $Solanaceae$.