Across
- 2. stuck in 1 place
- 5. digestive track
- 6. body cavity that contains internal organs
- 10. body form that swims
- 12. body form that attaches to surface
- 13. egg, larva, pupa, adult
- 15. heart pumps blood through vessels
Down
- 1. blood is not in vessels
- 3. skeleton of small hard fibers
- 4. egg, nymph, adult
- 7. mass of nerve cells
- 8. no definite shape
- 9. nerve cells
- 11. body organized around center
- 14. 2 nearly identical halves