Question

Which of the following characteristic is common amongst tapeworm, liver fluke, and planaria worm?

• A. They are all segmented.
• B. They all have flattened bodies.
• C. They are all found in gut.
• D. They all have coelom.

Answer 1

Answer: (B)

They all have flattened bodies.

Tapeworm, liver fluke, and planaria are all platyhelminths and they have flat bodies without any ridges or grooves. They are acoelomate, triploblastic, bilaterally symmetrical, and unsegmented. They are free-living as well as parasitic.
So, the correct answer is option B.