Biology · Animal Kingdom
Which one of the following features distinguishes Echinoderms from Cnidarians?
- 1The absence of sexual reproduction.
- 2The presence of radial symmetry.
- 3Having a central cavity involved in digestive processes.
- 4The presence of a network of water-filled tubes for movement.✓
Correct answer
The presence of a network of water-filled tubes for movement.
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