Whose body wall is made of calcium carbonate?

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Question

(D) The body wall of organisms belonging to the phylum $Echinodermata$ is characterized by the presence of an endoskeleton composed of calcareous ossi

Vedclass · Accepted Answer

Sea urchin

Vedclass · Answer

(D) The body wall of organisms belonging to the phylum $Echinodermata$ is characterized by the presence of an endoskeleton composed of calcareous ossicles (calcium carbonate plates).Among the given options,the sea urchin $(Echinus)$ belongs to the phylum $Echinodermata$.Scorpion,Prawn,and Cockroach belong to the phylum $Arthropoda$,which possess an exoskeleton made of chitin.

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

Similar Questions

Which phylum of animals exhibits bilateral symmetry in the larval stage and radial symmetry in the adult stage?

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:

$A$ special feature of Evisceration (Autotomy) is found in

Mark the correct combination of Phylum,Class,and Example.

The main function of pedicellariae in $Asterias$ is:

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