Phylum Porifera — Prelims Questions

Which of the following statements is INCORRECT regarding Phylum Porifera?

Which type of canal system is characterized by numerous small, spherical flagellated chambers, maximizing the surface area for filter-feeding?

Which of the following cells in sponges are totipotent and can differentiate into other cell types, including gametes and skeletal elements?

Which of the following is an example of a freshwater sponge?

Which of the following larval forms is characteristic of calcareous sponges like *Scypha*?

Which of the following statements about gemmules in sponges is correct?