The clitellum in Pheretima is present in the segments
A
12th, 13th and 14th
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B
13th, 14th and 15th
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C
14th, 15th and 16th
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D
15th, 16th and 17th
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Solution
The correct option is C 14th, 15th and 16th In mature earthworms, a prominent dark band of glandular tissue called clitellum is present in the 14th, 15th and 16th segments. It produces a cocoon inside which the fertilisation and development takes place. After about 3 weeks, each cocoon produces an average of four worms.