Which of the following organisms is free living?
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Tapeworm
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Earthworm
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Liver fluke
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Ascaris
B
Correct answer
Explanation
Earthworms are free-living annelids that inhabit soil and feed on organic matter. Tapeworms and liver flukes are parasitic flatworms (Platyhelminthes). Ascaris is a parasitic roundworm (Nematoda). Free-living means the organism is not dependent on a host for survival.