Which one of the following is a distinctive c | vedclass

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(A) The class $Bivalvia$ (also known as $Pelecypoda$) is characterized by a laterally compressed body enclosed within a shell consisting of two valves

Vedclass · Accepted Answer

Absence of a head

Vedclass · Answer

(A) The class $Bivalvia$ (also known as $Pelecypoda$) is characterized by a laterally compressed body enclosed within a shell consisting of two valves.One of the most significant and distinctive features of this class is the reduction or complete absence of a distinct head (acephalic condition).They lack a radula,which is typically present in other mollusks,and they possess a hatchet-shaped foot for burrowing.Therefore,the absence of a head is a diagnostic character of $Bivalvia$.

Which one of the following is a distinctive character of class $Bivalvia$ of the phylum $Mollusca$?

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