Question

The clitellum or cingulum in earthworm is present in

• A. 12, 13 and 14 segments
• B. 13, 14 and 15 segments
• C. 14,15 and 16 segments
• D. 16, 17 and 18 segments

Answer 1

The correct option is C 14,15 and 16 segments

The first body segment is called the peristomium (buccal segment) which contains the mouth. In a mature worm, segments 14, 15 and 16 segments are covered by a prominent dark band of glandular tissue called clitellum. Thus the body is divisible into three prominent regions - preclitellar, clitellar and postclitellar segments.

So the correct answer is '14, 15 and 16 segments'.