The Important Innovation That Evolved from the Gill Arches of Jawless

question 109

Multiple Choice

The important innovation that evolved from the gill arches of jawless fishes and is retained by chondrichthyans, ray-finned fishes, coelacanths, lungfishes, and tetrapods is

• A) heavily armored skin.
• B) the jaw.
• C) fins.
• D) the ability to swim.
• E) the vertebral column.

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