Ventral surface of mature earthworm can be distinguished from dorsal surface by -

Presence of clitellum

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None of these

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Presence of mid-dorsal line

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Presence of genital pores

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Solution

The correct option is D Presence of genital pores
Earthworms have long cylindrical body. The ventral surface is distinguished by the presence of genital openings (pores).The dorsal surface of the body is marked by a dark median mid-dorsal line (dorsal blood vessel) along the longitudinal axis of the body.
Hence, option C is correct.

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