Porifera Vocabulary

2. a modified type of collagen protein, forms the fibrous skeleton of most organisms among the phylum Porifera, the sponges.
3. one of the large tubular cells that constitute the wall of the incurrent canals in some sponges
5. ostium) are the inhalant pores in sponges through which water enters the body.
9. characterized by a fingerlike body shape known as the syconoid type of structure
10. lacks the ability of self-locomotion and is predominantly immobile
11. sponge larva having a complex structure in which the flagellated layer is restricted to numerous small interstitial chambers
12. the gelatinous matrix within a sponge
14. a mobile cell in the body of invertebrates including echinoderms, molluscs, tunicates, sponges and some chelicerates.

1. are the thin, flattened cells of the epidermis, the sponge's outer layer of cells
4. are cells that line the interior of asconoid, syconoid and leuconoid body type sponges that contain a central flagellum, or cilium, surrounded by a collar of microvilli which are connected by a thin membrane.
6. an 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. A cavity, in the form of a bag or tube, lined with choanocytes, that forms the structure of sponges.
13. one of the minute calcareous or siliceous bodies that support the tissue of various invertebrates