Suppose scientists discover a new echinoderm that uses its tube feet to move across the deep-sea floor as it hunts for prey. This newly discovered echinoderm can most likely be classified as a(n):
Correct answer: B. Asteroid.
- A. Crinoid.
- B. Asteroid.
- C. Ophiuroid.
- D. Holothurian.
Explanation
The correct answer is 'Asteroid.' Asteroids, known as starfish, are predatory echinoderms using their tube feet for motion and are located on the deep-sea floor. The scenario described aligns with these characteristics. Crinoids are primarily suspension feeders and not hunters. Ophiuroids use their arms rather than tube feet for movement and are scavengers. Holothurians usually feed on detritus and are not predators, which rules them out as well.
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