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MDCAT Biology QUESTION #7750
Question 1

The mantle is a characteristic anatomical feature of which group?

  • Annelids
  • Chordates
  • Echinoderms
  • Mussel (Mollusca)✔️
Correct Answer Explanation

The mantle is a fleshy fold in mollusks (e.g., mussel, snail, octopus) that secretes the shell. Annelids have no mantle; echinoderms have a water vascular system.