Q.
The cross-section of the body of an invertebrate is given below. Identify the animal, which has this body plan.
A) Cockroach
B) Roundworm
C) Planaria
D) Earthworm
Explanation
The given cross-section is of Planaria (acoelomate), a flatworm. Flatworms are devoid of cavities in between the alimentary canal and body wall, hence are acoelomate.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.