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Biology · ANIMAL KINGDOM

हिन्दी

Which of the following cnidarians possesses a hard skeleton composed predominantly of calcium carbonate \( \text{CaCO}_3 \)?

  1. Aurelia
  2. Physalia
  3. Corals
  4. Hydra

Correct answer · Option 3

Corals

Explanation

Some cnidarians, notably corals, have a skeleton composed of calcium carbonate (\( \text{CaCO}_3 \)).
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