Which of the following arrangements is in the correct ascending order?

Why does the problem of classification become more complex at higher taxonomic categories?

$I$ - 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 is $NOT$ true for a species?

Which of the following is incorrect regarding the rules of nomenclature?

Match the following organisms with their scientific names,orders,and families:

Common Name	Scientific Name	Order	Family
$a$. Earthworm	$p$. Rana tigrina	$w$. Glumiflorae	$1$. Poaceae
$b$. Sunflower	$q$. Zea mays	$x$. Anura	$2$. Asteraceae
$c$. Frog	$r$. Pheretima posthuma	$y$. Opisthopora	$3$. Megascolecidae
$d$. Maize	$s$. Helianthus annuus	$z$. Asterales	$4$. Ranidae