State the number of segments in earthworm which are covered by a prominent dark band or clitellum.
Answer- The clitellum, a conspicuous dark band of glandular tissue, covers segments 14–16 of a mature worm. As a result, the earthworm's body is separated into three sections: preclitellar, clitellar, and post-clitellar. The purpose of this clitellum is reproduction.