Multiple choice

Which of the following is a characteristic feature of Protochordates?

  1. Notochord

  2. Vertebral nerve cord

  3. Dorsal heart

  4. Schizocoel
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A Correct answer
Explanation

The notochord is the defining characteristic of protochordates - a flexible, rod-like mesodermal structure that provides skeletal support. Vertebrates possess a vertebral column replacing the notochord, while dorsal heart and schizocoel are not defining features of this group.

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