Which one of the following is $NOT$ an adaptation in endoparasitism?

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

Select the correct option for the following statements:
$(i)$ Platyhelminthes are pseudocoelomate / acoelomate.
$(ii)$ Cnidarians are radially symmetrical / asymmetrical.

Which of the following is an incorrect pair?

Match the following columns:

Column-$I$ (Animal)	Column-$II$ (Genus)
$P$. Crow	$I$. Columba
$Q$. Pigeon	$II$. Pavo
$R$. Parrot	$III$. Psittacula
$S$. Ostrich	$IV$. Neophron
$T$. Peacock	$V$. Aptenodytes
$U$. Penguin	$VI$. Corvus
$V$. Vulture	$VII$. Struthio

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