A) redia and miracidium
B) cercaria and redia
C) cercaria and metacercaria
D) miracidium and metacercaria
Correct Answer: D
Solution :
Stage in the life cycle of Fasciola when it infects intermediate host (snail) is miracidium and primary host is metacercaria. Different larval stages according to development sequence are miracidium-sporocyst, redia cercaria-metacercaria. Miracidium and cercaria larva are free swimming form in water while redia and sporocyst are formed in snail.
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