Which one feature is common to leech,cockroach and scorpion?

Which one of the following is not correctly matched?

Match the following group of organisms with their respective distinctive characteristics and select the correct option:

Organisms	Characteristics
$(a)$ Platyhelminthes	$(i)$ Cylindrical body with no segmentation
$(b)$ Echinoderms	$(ii)$ Warm-blooded animals with direct development
$(c)$ Hemichordates	$(iii)$ Bilateral symmetry with incomplete digestive system
$(d)$ Aves	$(iv)$ Radial symmetry with indirect development

$A$: Piscean scales are similar to reptilian scales in origin.
$R$: Age of the animal can be deduced by lines of growth on both the scales.

In contrast to Annelids,the Platyhelminthes show

Match the following columns:

Column-$I$	Column-$II$
$I.$ Skin without scales	$p.$ $Catla$
$II.$ Placoid scales	$q.$ $Hagfish$
$III.$ Cycloid scales	$r.$ $Chameleon$
$IV.$ Epidermal scales	$s.$ $Ray-fish$