The structure labelled II is the clitellum. It is a prominent, swollen band on the body of an earthworm that secretes mucus for reproduction and forms the cocoon where eggs are deposited.

Here are the answers to questions 6 and 7. 6. The structure labelled II is the clitellum. It is a prominent, swollen band on the body of an earthworm that secretes mucus for reproduction and forms the cocoon where eggs are deposited. The final answer is B 7. The organism (an earthworm) is found in soils rich in humus. Humus is decomposed organic matter that provides nutrients and a suitable habitat for earthworms. The final answer is A That's 2 down. 3 left today — send the next one.