Q.
In contrast to annelids the platyhelminths show :
A) radial symmetry
B) presence of pseudocoel
C) bilateral symmetry
D) absence of body cavity
Explanation
[Solution from source] Flatworms are acoelomates with no body cavity, whereas annelids are true coelomates. Both groups are bilaterally symmetrical, so bilateral symmetry does not set them apart, and a pseudocoel is found in roundworms. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.