Animal Kingdom Ques 139
139. During its life-cycle, Fasciola hepatica (liver fluke) infects its intermediate host and primary host at the following larval stages respectively:
(a) miracidium and metacercaria
(b) redia and miracidium
(c) cercaria and redia
(d) metacercaria and cercaria
Show Answer
Answer : b
Hints & Solutions
(b) When in contact with water, the egg capsule releases non-feeding larva miracidium. Miracidium enters the body of snail to form sporocyst. The sporocyst develops into redia. Redia form cercaria and come out of snail. They get encysted forming metacercaria.
BETA
