Porifera Vocabulary

2. Modified type of collagen protein, forms the fibrous skeleton of most organisms among the phylum Porifera, the sponges.
3. Large tubular cells that constitute the wall of the incurrent canals in some sponges.
5. ostium) A large opening in a sponge through which water flows out of the sponge.
9. Genus of calcareous sponges belonging to the family Sycettidae.
10. Cannot move, they filter water to obtain their food. They are, therefore, known as filter feeders.
11. A type of sponge having a thick body wall with a highly branched canal system leading into the spongocoel.
12. Gelatinous matrix within a sponge.
14. A moble cell in the body of invertebrates in sponges.

1. Layer of cells that covers the outer surface of the sponge.
4. Cells that line the interior of asconoid, syconoid and leuconoid body type sponges.
6. Excretory structure in the living sponge, a large opening to the outside through which the current of water exits after passing through the spongocoel.
7. Internal buds found in sponges and are involved in asexual reproduction.
8. Type of sponge having an oval shape and a thin body with pores leading directly into the spongocoel.
13. Siliceous bodies that support the tissue of various invertebrates