Across
- 1. any of the pores in sponges through which water enters the body
- 4. genus of marine sponges of the class Calcarea
- 5. a modified type of collagen protein, forms the fibrous skeleton of most organisms among the phylum Porifera
- 6. internal buds found in sponges and are involved in asexual reproduction
- 9. one of the large tubular cells that constitute the wall of the incurrent canals in some sponges
- 10. a type of sponge having a thick body wall with a highly branched canal system leading into the spongocoel
- 11. is a mobile cell (moving like an amoeba) in the body of invertebrates including echinoderms, molluscs, tunicates, sponges and some chelicerates
- 13. a group of flattened polygonal cells that together make up the pinacoderm in the dermal epithelium of sponges
Down
- 2. a type of sponge having an oval shape and a thin body wall with pores leading directly into the spongocoel
- 3. fixed in one place; immobile
- 4. a slender pointed usually hard body especially
- 7. a type of animal tissue comprised of loose cells embedded in a mesh of proteins and fluid, called the extracellular matrix
- 8. any of the flagellated cells in sponges that maintain a flow of water through the body
- 12. is an excretory structure in the living sponge