The $Cysticercus$ larva of $Taenia$ $solium$ develops in:

The free-living Platyhelminthes are

Transfer of $Taenia$ to the secondary host occurs as:

For completing its life cycle, Tapeworm requires/ Intermediate host of Tapeworm is

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

One example of animals having a single opening to the outside that serves both as mouth as well as anus is