Question

Which of the following is the common characteristic of liver fluke, tapeworm, and Planaria,?

• A. All are segmented.
• B. All are assymetrical.
• C. All have a coelom.
• D. All are flatworms.

Answer 1

Answer: (D)

All are flatworms.

Liver fluke, tapeworm, and Planaria are flatworms grouped under phylum Platyhelminthes. Flatworms are acoelomates i.e. they lack a body cavity. They show bilateral symmetry and their body does not have true segmentation. Thus, the correct answer is option D.