Multiple choice

Which of the following is not a protochordate?

  1. Herdemania

  2. Balanoglossus

  3. Salamander

  4. Amphioxus
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C Correct answer
Explanation

Protochordates include hemichordates (Balanoglossus), urochordates/tunicates (Herdemania), and cephalochordates (Amphioxus). These lack a true vertebral column. Salamander is an amphibian with fully developed vertebrae, making it a vertebrate, not a protochordate.

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