Which of the following is an acoelomate animal phylum?

The correct sequence of various larval stages in the life cycle of the liver fluke ($Fasciola$ $hepatica$) is:

“Triploblastic,unsegmented,acoelomate exhibiting bilateral symmetry and reproducing both asexually and sexually with parasitic forms.” The above description is characteristic of which phylum?

Which of the following is a free-living flatworm?

In which of the following animals is the digestive system absent?

What are the peculiar features that you find in parasitic platyhelminthes?