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which one of the following statements is...

which one of the following statements is totally wrong about the occurrence of notochord , while the other three are correct

A

It is present only in larval tail in Ascidians

B

It is replaced by a vertebral column in adult frog

C

It is absent throughout life in humans from the very beginning

D

It is present throughout life in Amphioxus

Text Solution

Verified by Experts

The correct Answer is:
C
Ascidia is a urochordate. Therefor, notochord is present only in larval tail. Amphioxus is a cephalochordate in which notochord is present from anterior end to tail and persists throughout life.
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  2. In which sub-phylum Notochord extends from head to tail region and per...

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  4. In some chrodates, the notochord is modified as the vertebral column. ...

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