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| Q. |
Which of the following animals has a clitellum? |
| A. | Millipede |
| B. | Centipede |
| C. | Earthworm |
| D. | Ringworm |
| Answer» C. Earthworm | |
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Explanation: A clitellum is part of a of the reproductive system of clitellates, a subgroup of annelids which contains oligochaetes (earthworms) and hirudineans (leeches). The clitellum is a thick, saddle-like, ring found in the epidermis (skin) of the worm, usually with a light colored pigment. To form a cocoon for its eggs, the clitellum secretes a viscous fluid. |
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