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  4. During its life cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively

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Q. During its life cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively

MGIMS WardhaMGIMS Wardha 2010

Solution:

Liver fluke (Fasciola hepatica) is a 'digenetic' endoparasite, ie, its life cycle completes within two hosts. The primary host is sheep and the secondary or intermediate host is fresh water gastropod, snail. Fasciola hepatica infects its intermediate host at miracidium stage and its primary host at metacercaria stage.