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  4. Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct ?

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Q. Which one of the following statements is totally wrong about the occurrence of notochord, while the other three are correct ?

AIPMTAIPMT 2011Animal Kingdom

Solution:

Humans belong to the Phylum Chordata. Animals belonging to the Phylum Chordata possess a notochord either during early embryonic life or throughout the life. In some, it is replaced by vertebral column. In humans, notochord is present only in the embryonic stage, it is replaced by vertebral column in the adult form.