Simple Animals

2. Sponges as adults
5. Premature stage of an organism
8. One of two principal body types occurring in members of the invertebrate animal phylum Cnidaria
12. An organism that have both male and female reproductive system
14. Can make sperms and eggs in the same body
15. Central opening through which water flows
16. A small clump of cells that forms on the lining of the colon
19. Free-swimming or crawling larval type common in many species of the phylum Cnidaria
20. One of the three kinds of sponge body. Have an extensively branched canal system. It has multiple ostia for water exit, more water can move though the sponge and this is the most common type of sponge
21. Having the male and female reproductive organs in separate individuals.

1. Anything associated with or occurring on the bottom of a body of water
3. Spins to create a current to pull in watter
4. Regulate the flow of water,collect excess fluid and excreate nitrogen waste
6. New growth occurs on sponge that will eventually detach and grow into a separate sponge – a clone of the original – same DNA
7. Feeder- Animals that need water to enter through there pores bringing in food and oxygen from the water
9. One of the three kinds of sponge body. It's the simplest form with vase-like body and is the least common type of sponge
10. Series of tiny pores all over that bring water in (singular: Ostium)
11. Microscopic needle-like spikes that are made of Calcium carbonate (CaCO3) or silica (glass)
13. A fibrous protein made of collagen (more flexible)
17. Large opening at the top were excess water leaves
18. One of the three kinds of sponge body. The sponge wall is folded into canals, and Choanocytes line the radial canals to move water
19. An organism that filter feeders feed on. It is an organism that is carried from tides and current easily and cannot swim well