Porifera Crossword

2. structural elements found in most sponges
3. when a sponge can regrow itself after loosing a body part
5. sperm are released into the water by one indivisual and taken into the canal system of another
7. the large, central cavity of sponges
10. simple sponges that are small and tubed shaped
11. spicules that are siliceous but not 6 rayed
14. ascoinoids but larger with a thicker wall
15. a large aperture in a sponge through which water is expelled.
16. sponges with the spicules of calcium and carbonate
18. glass sponges with 6 rayed spicules of silica
19. can be used to clean and is softer than its artificial cousin
21. most complex and common of sponge types
23. flat cells found on the outside of sponges, as well as the internal canals of a sponge
24. after reaching a certain size sponges may detach from parent to form colonies or form new sponges

1. both oocytes and sperm are expelled into the water where fertalization occures
4. amoeboid cells that are found in sponges
6. a tough-coated dormant cluster of embryonic cells produced by a freshwater sponge for development in more favorable conditions.
7. fibrous substance found in the skeleton of many sponges.
8. gelatinous matrix within a sponge
9. cells that line the interior of asconoid
12. sponges that spend their entire adult life anchored to a surface underwater
13. organism derived from a single germ layer
17. irregular shaped like a protist called amoeba
20. sponges pass water through their bodies in a process known as
22. sponges that have multiple pores