Question
During its life cycie, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively
metacercaria and ceracaria
miracidium and metacercaria
redia and miracidium
cercaria and redia
Solution
B.
miracidium and metacercaria
Liver fluke (Fasciola hepatica) is a digenetic endoparasite, i.e., its life cycle completes within two hosts.
The primary host is sheep and the secondary or intermediate host is freshwater gastropod, snail. It infects its intermediate host at miracidium stage and its primary host at metacercaria stage.
