Which of the following statement is incorrect about Molluscans?
Correct answer: D. They move by tube feet
- A. They are surrounded by single or double pieces of hard skeleton.
- B. Their shell grows as the animal grows.
- C. They have hydrostatic skeleton.
- D. They move by tube feet
Explanation
Molluscs may have a shell, their shell grows with the animal, and their soft bodies can use a fluid-supported hydrostatic skeleton. Tube feet are characteristic of echinoderms such as starfish, not molluscs, so d is incorrect.
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