A box-like calcareous test occurs in: | vedclass

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(C) The $Echinodermata$ phylum is characterized by an endoskeleton of calcareous ossicles. In the class $Echinoidea$,specifically in organisms like th

Vedclass · Accepted Answer

Sand Dollar

Vedclass · Answer

(C) The $Echinodermata$ phylum is characterized by an endoskeleton of calcareous ossicles. In the class $Echinoidea$,specifically in organisms like the $Sand \ Dollar$ $(Echinarachnius)$ and Sea Urchins,the calcareous ossicles are fused together to form a rigid,box-like structure known as a 'test'. Therefore,the correct answer is $Sand \ Dollar$.

$A$ box-like calcareous test occurs in:

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