Flatworms possess a dorso-ventrally flattened body.

In the secondary host,the transmission of $Taenia$ occurs in the form of:

The $Cercaria$ stage of $Fasciola$ $hepatica$ leads to which of the following stages?

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

Which one of the following kinds of animals are triploblastic?

Planaria possesses high capacity of