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Which one of the following structures in Pheretima is correctly matched with its function?

1. Clitellum - secretes cocoon
2. Gizzard - absorbs digested food
3. Setae - defence against predators
4. Typhlosole - storage of extra nutrients

Correct answer: Clitellum - secretes cocoon

Solution

In Pheretima, the clitellum secretes mucus and forms the cocoon during reproduction. The other options are incorrect because the gizzard grinds food, setae help in locomotion, and typhlosole increases absorptive surface area.

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