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Every phylum is named according to certa...

Every phylum is named according to certain features present in most of its members. Cephalochordates are named so

A

Due to presence of notochord only in tail of adult

B

Because of presence of notochord only in head of larva and adult

C

Due to presence of notochord from head to tail throughout the life of organism

D

Because of presence of notochord from head to tail only in larval stage

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