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A farmer in a rice paddy in Asia becomes infected with the liver fluke by


A) eating infected snails.
B) drinking water contaminated with eggs.
C) eating infected fish that is undercooked or uncooked.
D) swimming or wading in infected water,where the cercariae enter the skin.
E) None of the choices is correct

F) B) and D)
G) A) and B)

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Fertilization in rotifers is achieved


A) externally with both eggs and sperm shed into the water.
B) by normal copulation of a penis and vaginal pore.
C) by transfer of sperm in a gelatinous spermatophore packet.
D) by hypodermic impregnation injecting sperm into the pseudocoel.

E) A) and C)
F) All of the above

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