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If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is:

1. coelomic fluid
2. haemolymph
3. slimy mucus
4. excretory fluid

Correct answer: coelomic fluid

Solution

Earthworms are coelomates, so the fluid inside their body cavity is coelomic fluid. Since the gut is not damaged, the released fluid is not digestive material, and earthworms do not have haemolymph like insects.

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