Multiple choice

Which of the following organisms form shells over their bodies?

  1. Poriferans

  2. Annelides

  3. Molluscs

  4. Arthropods
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Molluscs (snails, clams, oysters, octopus) are characterized by a soft body often protected by a hard calcareous shell. Poriferans have porous bodies, annelids are segmented worms, and arthropods have jointed appendages and exoskeleton (not shells).

Keep practicing — related questions