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How can we distinguish the ventral surface of the earthworm by their dorsal surface?

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in Biology – Class 11 by (272k points)
How can we distinguish the ventral surface of the earthworm by their dorsal surface?

(a) Presence of setae

(b) Presence of hair

(c) Presence of genital pores

(d) Presence of oil glands

This question was addressed to me during an online exam.

Origin of the question is Animals topic in chapter Structural Organisations in Animals of Biology – Class 11

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The correct option is (c) Presence of genital pores

The explanation is: The ventral surface of the body of the earthworm can be distinguished by the dorsal surface by the presence of genital openings or pores. The genital openings in the earthworm help in cross-fertilisation and pores help in removal of the wastes generated in the body.

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