June

1. - a form of solid tissue containing cells and fibers
4. - Greek term that means "thread", describing roundworms
7. - More than one body form
10. - organisms with many cells
12. - flagellated collar cells
16. - proifera family that capture prey using spicules that act like velcro
17. - cavity between wall and gut
18. - A thick non-cellular cuticle secreted by the underlying epidermis
19. - Form the stiffening skeletal structure of the sponge and may be made of calcium carbonate
20. - Stinging cells that contains neurotoxin that paralyzes prey

2. - individuals produce both male and female gametes at different times
3. - sponge cell type that move around in the mesohyl
5. - Class of Phylum Platyhelminthes which are non-ciliated teguments composed of glycoprotein
6. - Pores where water moves
8. - Simplest canal system with single large oscolum
9. - Pore-bearing animals
11. - Rod-shaped structures that expand and form a protective mocous coat around the animal
13. - Joined together by delicate microfibrils which filter out tiny food particles.
14. - most common parasite in the US
15. - More complex sense organs that open around their heads