Across
- 2. a migratory, ameboid cell found in many invertebrates that functions in excretion, assimilation, etc
- 4. (Mesenchyme) gelatinous matrix within a sponge
- 7. one of the small, hard, calcareous or siliceous bodies that serve as the skeletal elements of various marine and freshwater invertebrates
- 8. tubular cells which make up the pores of a sponge known as ostia
- 9. a type of sponge having a thick body wall that is folded to form many short canals leading to the spongocoel
- 10. (Pinacocyte) flat cells found on the outermost layer of a sponge
- 12. a type of sponge having an oval shape and a thin body wall with pores leading directly into the spongocoel
- 14. permanently attached; not freely moving
Down
- 1. an asexually produced mass of cells that is capable of developing into an animal, as a freshwater sponge
- 3. a flagellated cell with a collar of protoplasm at the base of the flagellum, numbers of which line the internal chambers of sponges
- 5. a type of sponge having a thick body wall with a highly branched canal system leading into the spongocoel
- 6. a small mouthlike aperture, as of a sponge
- 11. a scleroprotein occurring in the form of fibers that form the skeleton of certain sponges
- 13. (singular ostium) a small mouthlike aperture, as of a sponge