Which of the following pairs is correctly matched?

$12$ pairs of cranial nerves are present in

Match the animals listed in Column-$I$ with their respective zoological names given in Column-$II$; choose the answer which gives the correct combination of the alphabets of the two columns.

Column-$I$	Column-$II$
$(A)$ Starfish	$(p)$ Sepia
$(B)$ Jellyfish	$(q)$ Asterias
$(C)$ Devilfish	$(r)$ Aurelia
$(D)$ Cuttlefish	$(s)$ Octopus

Match the following organisms with their respective characteristics:

$(a)$ Pila	$(i)$ Flame cells
$(b)$ Bombyx	$(ii)$ Comb plates
$(c)$ Pleurobrachia	$(iii)$ Radula
$(d)$ Taenia	$(iv)$ Malpighian tubules

Select the correct option from the following:

Match the following columns and select the correct option.
Column $-I$ | Column $-II$
$(a)$ $6-15$ pairs of gill slits | $(i)$ Trygon
$(b)$ Heterocercal caudal fin | $(ii)$ Cyclostomes
$(c)$ Air Bladder | $(iii)$ Chondrichthyes
$(d)$ Poison sting | $(iv)$ Osteichthyes

Match the following columns.

$a$. Cellular level of organisation	$1$. Cnidarians
$b$. Organ level of organisation	$2$. Platyhelminthes
$c$. Organ system level of organisation	$3$. Chordates
$d$. Tissue level of organisation	$4$. Porifera

Select the correct sequence for $a, b, c, d$.