They are considered to be the most primitive and are surely the first of the vertebrates?
Correct answer: D. Jawless fishes
- A. Frogs
- B. Reptiles
- C. Amphibinas
- D. Jawless fishes
Explanation
Jawless fishes, such as lampreys and hagfishes, retain primitive vertebrate features and lack jaws. Frogs and other amphibians appeared later in vertebrate evolution, so choosing amphibians confuses the first land vertebrates with the earliest vertebrate group.
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