Match List $I$ with List $II$ :

List $I$	List $II$
$A$. Pterophyllum	$I$. Hag fish
$B$. Myxine	$II$. Saw fish
$C$. Pristis	$III$. Angel fish
$D$. Exocoetus	$IV$. Flying fish

Choose the correct answer from the options given below :

The point by which $Annelida$ advanced over $Nematoda$ is

Match the items in Column-$I$ with Column-$II$ and select the correct option:

Column-$I$	Column-$II$
$(A)$ Fish	$(i)$ Two atria and one ventricle
$(B)$ Frog	$(ii)$ One atrium and one ventricle
$(C)$ Snake	$(iii)$ Two atria and two ventricles
$(D)$ Ostrich	$(iv)$ Two atria and incompletely divided ventricle

Match the animals listed under Column-$I$ with their respective zoological names given under Column-$II$; choose the answer that provides the correct combination of the alphabets of the two columns.
Column-$I$ (Common Name) | Column-$II$ (Zoological Name)
$A$. Starfish | $p$. Sepia
$B$. Jellyfish | $q$. Astropecten
$C$. Devilfish | $r$. Aurelia
$D$. Cuttlefish | $s$. Octopus

In which of the following is ecdysis (moulting) $NOT$ observed?

Which of the following pairs is mismatched?