Question

Platyhelminthes contain both free living as well as parasite animals in class

• A. Cestoda
• B. Trematoda
• C. Turbellaria
• D. None of the above

Answer 1

The correct option is B Trematoda

Cestoda is a class of parasitic flatworms (tapeworms).
Trematoda is a class which includes two groups of parasitic worms (flukes).
Turbellaria includes all the sub-groups that are not exclusively parasitic i.e., some of them in this class are free-living like Pseudoceros dimidiatus.
Therefore, the correct answer is option B.