Q. A single opening of the digestive system is found in
A) Protista
B) Ctenophore
C) Porifera
D) Platyhelminthes
Explanation
Platyhelminthes has a single opening within the body that serves as both mouth and anus
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.