Multiple choice

Which of the following is not a feature of all organisms in the phylum mollusca?

  1. Secrete a calcium carbonate shell

  2. Soft bodied

  3. Non-segmented bodies

  4. Digestive system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

While many mollusks have shells, not all do (e.g., slugs and octopuses). Therefore, secreting a calcium carbonate shell is not a feature of all mollusks.

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