The basic unit of classification for plants and animals is ....

Arrange the following taxonomic groups $(a, b, c$ and $d)$ according to their taxonomic ranks in descending order $:-$
$(a)$ $Triticum$ $(b)$ $Monocotyledonae$
$(c)$ $Poaceae$ $(d)$ $Poales$

In taxonomic hierarchy,which of the following groups of taxa will have the highest number of similarities compared to others?

Assertion $(A)$: Linnaeus is known as the father of taxonomy.
Reason $(R)$: Linnaeus developed the binomial nomenclature system for the scientific naming of organisms.
Which option is correct for Assertion $(A)$ and Reason $(R)$?

The main purpose of classification is

$A$ group of plants with similar traits of any rank is known as: