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प्रश्न
Which one is the most striking or (common) character of the vertebrates?
विकल्प
Presence of notochord
Presence of triploblastic condition
Presence of gill pouches
Presence of coelom
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उत्तर
Presence of notochord
Explanation -
Notochord is a solid, unjointed, rod-like structure situated on the dorsal side between the dorsal, hollow nerve cord and the alimentary canal. Presence of notochord is one of the characteristic features of chordates including vertebrates. In vertebrates, notochord is only present in the embryonic stage, and is replaced by a cartilagenous or bony vertebral column in the adults.
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