Which organism exhibits a body divided into f | vedclass

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(B) The organism that exhibits a body divided into five arms is the Brittle star (Ophiuroidea). $1$. Brittle stars belong to the phylum Echinodermata.

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Brittle star

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(B) The organism that exhibits a body divided into five arms is the Brittle star (Ophiuroidea). $1$. Brittle stars belong to the phylum Echinodermata. $2$. $A$ characteristic feature of adult echinoderms is pentamerous radial symmetry,meaning their body parts are arranged in fives around a central axis. $3$. Balanoglossus is a hemichordate,Octopus is a mollusk,and Prawn is an arthropod,none of which exhibit pentamerous symmetry.

List-$I$ (Biological Name)	List-$II$ (Common Name)
$A$. Asterias	$I$. Sea urchin
$B$. Antedon	$II$. Brittle star
$C$. Echinus	$III$. Sea lily
$D$. Ophiura	$IV$. Star fish

Which organism exhibits a body divided into five arms (pentamerous symmetry)?

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Match List-$I$ with List-$II$:

List-$I$ (Biological Name) List-$II$ (Common Name)

$A$. Asterias $I$. Sea urchin

$B$. Antedon $II$. Brittle star

$C$. Echinus $III$. Sea lily

$D$. Ophiura $IV$. Star fish

Choose the correct answer from the options given below:

$A$ box-like calcareous test occurs in:

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