Q. Which one of the following does not have an excretory system?
A) Myxine
B) Carcharodon
C) Balanoglossus
D) Asterias
Explanation
In the members of phylum-Echinodermata like Asterias (star fish), Echinus (sea urchin), Antedon (sea lily), Cucumaria (sea cucumber) and Ophiura (brittle star) an excretory system is absent.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.