Female Earthworm Reproductive System

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An illustration of the reproductive system of a female earthworm which is located in the eleventh to the fourteenth segment. “sp. o, its external orifice; sp. sac, spermathecal sac; av, sac containing ovary; r.o, egg; od, oviuct.” (Britannica. 1910)




Encyclopaedia Britannica (11th ed., vol. 5) (New York, NY: The Encyclopaedia Britannica Company, 1910)


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