General features a Eggs can only develop(hatch in the miracidium fresh water ■ Asexual phase: 口 Eggs>miracidium in water>sporocyst in snail > redia sporocyst cercaria release in water redia >encysted metacercaria in second intermediate host- infective stage a Sexual phase a Preadult(Juvenile)> migrated to cercaria metacercaria favorable residing site> adult worm ≠ lay eggs◼ Eggs can only develop (hatch) in the fresh water ◼ Asexual phase:  Eggs→miracidium in water→sporocyst in snail →redia →cercaria release in water →encysted metacercaria in second intermediate host – infective stage ◼ Sexual phase  Preadult (Juvenile)→migrated to favorable residing site → adult worm → lay eggs General features cercaria metacercaria redia sporocyst egg miracidium