Which animal has thorns of calcium carbonate on its body?
A
Lung fish
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B
Snail
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C
Sponge
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D
Starfish
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Solution
The correct option is D Starfish Molluscs have calcium carbonate exoskeleton in their bodies. Snails are molluscs and carry a shell on their body made of calcium carbonate. Lungfish, sponge, and starfish do not have calcium carbonate deposited on their bodies.