Body is globular in_________?
Correct answer: B. Sea Urchin
- A. Cake urchin
- B. Sea Urchin
- C. Sea cucumber
- D. Brittle star
Explanation
A sea urchin has a compact, rounded or globular body enclosed by a rigid test and movable spines. Cake urchins are flattened, sea cucumbers are elongated, and brittle stars have a distinct central disc with slender arms. The likely mistake is choosing a because both are echinoderms, despite their different body shapes.
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