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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

(a) It is absent throughout life in humans from the very biginning.

B

(b) It is present throughout life in Amphioxus.

C

(c) It is present only in larva tail in Ascidians.

D

(d) It is replaced by vertebral column in adult frog.

Text Solution

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The correct Answer is:
A
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