Provide its full classification and at least three characteristics, including how it feeds and reproduces. Your textbook is a sufficent source of this information. A question like this will appear on the next exam. Class Trematoda belongs to the phylum Platyhelminthes, which is in the kingdom Animalia of the domain Eukaryota.
Platyhelminths are flatworms - bilateral acoelomates with true tissues.
Most trematodes are parasitic they suck host fluids with an oral sucker, mouth and pharynx, into their blind gut.