Q. Which one of the following is not a characteristic feature of sponges?
A) Cellular level of organization
B) Presence of ostia
C) Intracellular digestion
D) Body supported by chitin
Explanation
The sponges possess an endoskeleton in the form of calcareous spicules, siliceous spicules and sponging fibres.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.