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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 absent throughout life in humans from the very beginning

B

It is present throughout life in Amphioxus

C

It is present only inlarval tail in Ascidians

D

It is present only in larval tail in Ascidians

Text Solution

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The correct Answer is:
It is replaced by vertebral column in adult frog.
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