Flame cells are the excretory organs of:

$Taenia \ solium$ is characterized by:

In $Fasciola$ (liver fluke),the digestive system is:

In Platyhelminthes and rotifers,the excretory organs are . . . . . . .

During its life cycle,$Fasciola$ $hepatica$ $(Liver$ $Fluke)$ infects its intermediate host and primary host at the following larval stages respectively:

During its life cycle,the liver fluke ($Fasciola$ $hepatica$) infects its intermediate host and primary host,respectively,through which of the following larval stages?