Simple Animals

4. make sperm and eggs in the same body
6. referring to bottom of body water
9. separate male and female bodies
12. most common sponge, extensively branched oral system, higher surface are move water moving through
13. a body form, sexual
14. a fibrous protein made of collagen
16. both male and female genitalia
19. walls folded into canals, choanocyte line the radical canals to move water
20. organisms that live in large body water and are unable to swim against a current
22. free swimming larvae

1. central opening through which water flows
2. feeding by filtering out plankton suspended in water
3. capable of contracting or causing contraction
5. attached directly by its base without a stalk or peduncle
7. done of the original-same dna
8. large opening at the top where excess water leaves
10. spins to create current to pull in water with food
11. a body form, asexual
15. series of tiny pores all over that bring water in
17. microscopic needle like spikes that are made of calcum carbonate or silica
18. simplest body form, vase like least common type of sponge
21. occurs after birth and before the adult form is reached