Which of the following is a spiny-skinned org | vedclass

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(A) The term 'Echinodermata' is derived from the Greek words 'echinos' (spiny) and 'derma' (skin). Organisms belonging to the phylum $Echinodermata$ a

Vedclass · Accepted Answer

Starfish

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(A) The term 'Echinodermata' is derived from the Greek words 'echinos' (spiny) and 'derma' (skin). Organisms belonging to the phylum $Echinodermata$ are characterized by the presence of a spiny-skinned endoskeleton made of calcareous ossicles. Among the given options,$Starfish$ $(Asterias)$ belongs to the phylum $Echinodermata$,and thus possesses a spiny skin. $Jellyfish$ belongs to phylum $Cnidaria$,$Silverfish$ is an insect (phylum $Arthropoda$),and $Crayfish$ is a crustacean (phylum $Arthropoda$).

Column-$I$	Column-$II$
$(i)$ Asterias	$(a)$ Brittle star
$(ii)$ Echinus	$(b)$ Sea lily
$(iii)$ Antedon	$(c)$ Sea urchin
$(iv)$ Ophiura	$(d)$ Star fish

Which of the following is a spiny-skinned organism?

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Match column-$I$ with column-$II$ :
Column-$I$ Column-$II$
$(i)$ Asterias $(a)$ Brittle star
$(ii)$ Echinus $(b)$ Sea lily
$(iii)$ Antedon $(c)$ Sea urchin
$(iv)$ Ophiura $(d)$ Star fish

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