sexual reproduction involves two earthworms |
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| navigate by keyword : clitellum cocon copulation cross develop dirt dna earthworm egg embryo external female fertilization genetic grow head hermaphrodites insemination larva male mate mouth mucous night organs ovaries oviducts parthenogenesis population pores position process regenerate reproduce reproduction sacs segment separate septa septum sex soil sperm spermatophores surface testes transfering tube vesicles worm |
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| Two earthworms mating. In order to mate, the worms line up so that the clitellum of each worm is near the gamete-producing, sexual organs of the other worm. The worms then exchange sperm. The clitella in this picture can be seen as the slightly swollen, pinkish regions on the anterior half of the worm bodies |
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