question_answer 18)

  The clitellum is a distinct part in the body of earthworm, it is found in (a) segment 13-14-15      (b) segment 14 -15 -16  (c) segment 12-13-14        (d) segment 15-16-17

Answer:

                  (b) The clitellum is a prominent circular band of glandular nature, present in 14th to 16thsegments in earthworm. Clitellum secretes mucus and albumin, which helps in theformation of cocoons, and is used for fertilization of eggs.