Bilaterally symmetrical and acoelomate animals are exemplified by

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 of the following does not have an alimentary canal?

Both alternation of generations and alternation of hosts are present in

$Hymenolepis nana$ is:

Which stage in the life cycle of $Taenia \ solium$ infects the intermediate host?