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Question

__________ has a notochord but no vertebral column.

A
Amphioxus
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B
Petromyzon
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C
Tadpole larva of urodeles
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D
Myxine
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Solution

The correct option is A Amphioxus
Amphioxus or lancelets comprise approximately of 32 species of fish-like marine chordates. In the lancelet, there is a nerve cord above the notochord, but no cranium or vertebrae or eyes.
So, the correct answer is option A.

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