Week 3

4. the sponge cell type that lives in the gel matrix and transports food
5. the clade containing sponges
8. mechanism of evolution caused by a chance event
9. the clade containing box jellyfish
12. the sponge cell type that resembles choanoflagellates
14. stinging cell
15. something that having a large body size because of multicellularity helps prevent
16. mechanism of evolution where organisms that are more suited to their environment survive to produce offspring
20. clade containing hydra, obelia, physalia and gonionemus
21. the largest and most complex sponge body type

1. the structure that provides support in the cnidarian body
2. the clade containing animals with radial symmetry
3. the clade containing sea anemones and coral
6. the theory of animal evolution that is supported by molecular data
7. the sponge cell type that is pinched by the pinacocytes to control water flow
10. the simplest and smallest sponge body type
11. the sponge cell type on the outer layer of the sponge
13. highly folded sponge body shape
17. programmed cell death that rids to body of damaged cells
18. the clade containing true jellies
19. the simplest form of a nervous system in animals