Question

Planaria are included under the class

• A. Trematoda
• B. Turbellaria
• C. Cestoda
• D. Nematoda

Answer 1

The correct option is B Turbellaria

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. Planaria is flatworm of the Turbellaria class which is bilaterally symmetrical.

Therefore, the correct answer is option B.