1. The best description of the group of animals to which Sycon belongs is

2. If a sponge is chopped into small pieces, this happens

3. The spicules of silica are found in

4. This about sponges is true

5. These sponges are found in rivers

6. In sponges, this chamber is common to all the types of canal systems

7. Amphiblastula is the larva of __________

8. The primitive multicellular entities, sponges have

9. This is the excretory waste of Sycon

10. In Sycon, the epithelial lining is made of