Which of the following exhibits both radial and bilateral symmetry?
Correct answer: B. Echinoderms
- A. Molluscs
- B. Echinoderms
- C. Flatworms
- D. Sponges
Explanation
Echinoderms exhibit both radial and bilateral symmetry. During larval stages, echinoderms have bilateral symmetry whereas they have penta-radial or simply, radial symmetry during adult life. Molluscs and flatworms are phyla of bilateral symmetry. Sponges don't exhibit any symmetry; they are irregular/asymmetrical.
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