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Chordata/Vertebrata

Which of the ...

Question

Which of the following have a notochord throughout life?

A

Birds

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B

Snake

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C

Fish

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D

Amphioxus

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Solution

The correct option is D
Amphioxus

Amphioxus belongs to the phylum Chordata (subphylum Cephalochordata). In amphioxus, the notochord persists throughout life. In chordates which belong to the subphylum Vertebrata, the notochord develops into the vertebral column during embryonic development.

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