Select the incorrect match$-$

Give an example of the following:
$(a)$ Roundworm
$(b)$ Fish possessing poison sting
$(c)$ $A$ limbless reptile/amphibian
$(d)$ An oviparous mammal

Match List $I$ with List $II$ :

List $I$	List $II$
$A$. Pleurobrachia	$I$. Mollusca
$B$. Radula	$II$. Ctenophora
$C$. Stomochord	$III$. Osteichthyes
$D$. Air bladder	$IV$. Hemichordata

Choose the correct answer from the options given below :

Which one of the following groups of animals is bilaterally symmetrical and triploblastic?

Select the correct match for Column $X$ and Column $Y$:

Column $X$	Column $Y$
$(1)$ Aves	$(A)$ Endoskeleton made of cartilage
$(2)$ Amphibia	$(B)$ Left aortic arch
$(3)$ Chondrichthyes	$(C)$ First homeothermic animals
$(4)$ Mammalia	$(D)$ Metamorphosis

Choose the correct option from the following statements:
$(i)$ $Pleurobrachia$ and $Ctenoplana$ are examples of the phylum $Ctenophora$.
$(ii)$ $Spongilla$ is a freshwater sponge.