In which of the following is the notochord ex | vedclass

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(A) In the phylum $Chordata$,the subphylum $Cephalochordata$ is characterized by the presence of a notochord that extends from the head to the tail re

Vedclass · Accepted Answer

Branchiostoma

Vedclass · Answer

(A) In the phylum $Chordata$,the subphylum $Cephalochordata$ is characterized by the presence of a notochord that extends from the head to the tail region and persists throughout their life.$Branchiostoma$ (also known as $Amphioxus$ or $Lancelet$) is a classic example of $Cephalochordata$.In $Herdmania$ (a $Urochordate$),the notochord is present only in the larval tail.$Balanoglossus$ belongs to the phylum $Hemichordata$,where the notochord is absent (it has a stomochord).$Frog$ is a $Vertebrate$ where the notochord is replaced by a vertebral column in the adult stage.Therefore,the correct answer is $Branchiostoma$.

In which of the following is the notochord extended from head to tail region and is persistent throughout their life?

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