In taxonomy,the category 'Class' is placed between which of the following?

What is formed by a group of related genera?

$I$ - Species,$II$ - Kingdom,$III$ - Class,$IV$ - Genus,$V$ - Family,$VI$ - Phylum,$VII$ - Order
Categories classified based on similar characteristics - $P$
Categories classified based on a group of characteristics - $Q$
Select the correct option for $P$ and $Q$.
$P\quad\quad\quad\quad\quad Q$

Which of the following represents the order of a horse?

Which system is used to provide scientific names to plants?

$DNA$ sequence is the basis of grouping organisms in