Which marine animals possess a notochord only | vedclass

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(C) The phylum Chordata is divided into three subphyla: Urochordata,Cephalochordata,and Vertebrata. In subphylum Urochordata (also known as Tunicata),

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(C) The phylum Chordata is divided into three subphyla: Urochordata,Cephalochordata,and Vertebrata. In subphylum Urochordata (also known as Tunicata),the notochord is present only in the larval tail and disappears in the adult stage. Examples of Urochordata include $Ascidia$,$Salpa$,and $Doliolum$. $Amphioxus$ (Cephalochordata) retains the notochord throughout its entire life,extending from head to tail. Therefore,both $Ascidia$ and $Salpa$ are urochordates that possess a notochord only during the larval stage.

Which marine animals possess a notochord only during their larval stage?

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