Question:

Which of the following is an echinoderm?

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Echinoderms = Spiny-skinned marine animals (e.g., sea urchins, starfish). Others listed are mollusks or cnidarians.
Updated On: Jun 3, 2025
  • Sea lemon
  • Sea fan
  • Sea hare
  • Sea urchin
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The Correct Option is D

Solution and Explanation

Sea urchins belong to the phylum Echinodermata, which also includes starfish, brittle stars, and sea cucumbers. They are marine animals characterized by radial symmetry and a calcareous endoskeleton.
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