(B) In the earthworm (Pheretima),the body is divided into segments called metameres. The clitellum is a prominent dark band of glandular and non-gland

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(B) In the earthworm (Pheretima),the body is divided into segments called metameres. The clitellum is a prominent dark band of glandular and non-glandular tissue. It is located in the $14^{th}$,$15^{th}$,and $16^{th}$ segments of the body. This region is responsible for secreting mucus and cocoons for reproduction.