Identify the location and function of the following structures:
$(i)$ Water vascular system
$(ii)$ Cloaca

Which of the following pairs is correctly matched?

Closed circulatory system is present in

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

Column $-II$ below consists of brief descriptions of organisms in column $-I$. Which of the following is an incorrect match between column $-I$ and column $-II$?

Column $-I$	Column $-II$
$A$. Millipede	Terrestrial organism with two pairs of jointed appendages attached to each of its many body segments and respires through trachea.
$B$. Nereis	Numerous setae on lateral appendages called parapodia.
$C$. Taenia solium	Body is covered with cuticle,alimentary canal absent.
$D$. Ctenophores	Radially symmetrical,devoid of cnidoblasts,polyp stage present in their life cycle.

The echinoderms,hemichordates,and chordates had which of the following larvae as a common ancestral form?