Question

The___is the only chordate feature present in the adult phase of all vertebrates.

A. Pharyngeal gill pouch
B. Notochord
C nerve cord
D none of the above

Answer 1

C) Nerve cord

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Answer 2

B. Notochord.

Step-by-step explanation:

The notochord is a flexible, rod shaped structure found in all chordates at their embryonic stage and in the adult phase of vertebrates. It provides skeletal support to the body, and it is gradually replaced by the vertebral column.