Question

Various type of canal system in parifera?

Answer 1

1. Rhagon type with conical shape and broad base.
2. Ascon type with flagellated spongocoel.
3. Sycon type with flagellated radial canals.
4. Leucon type with flagellated chambers.

Answer 2

Body walls of syconoid sponges include two types of canals, the radial canals and the incurrent canals paralleling and alternating with each other. ... In sycon type of canal system, spongocoel is a narrow, non-flagellated cavity lined by pinacocytes.