Which of the following organisms possess a no | vedclass

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(B) In the phylum $Chordata$,the subphylum $Urochordata$ (also known as $Tunicata$) is characterized by the presence of a notochord only in the larval

Vedclass · Accepted Answer

Urochordata

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(B) In the phylum $Chordata$,the subphylum $Urochordata$ (also known as $Tunicata$) is characterized by the presence of a notochord only in the larval tail. As the larva undergoes metamorphosis into an adult,the notochord disappears. In $Cephalochordata$,the notochord extends from head to tail region and is persistent throughout their life. In $Vertebrata$,the notochord is present during the embryonic period and is replaced by a cartilaginous or bony vertebral column in the adult. Therefore,the correct option is $B$.

Which of the following organisms possess a notochord only in the larval stage?

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