Across
- 1. animals shape, symmetry, and internal organization
- 3. true coelom, located entirely within the mesoderm
- 5. distinct left and right halves to the body
- 8. anterior concentration of sensory structures and nerves
- 9. irregular in shape
- 10. body parts arranged around a central axis
- 12. shows how animals are related through evolution
- 14. lining of digestive tract
Down
- 2. an animal with no body cavity
- 4. have a body cavity located between the mesoderm and endoderm
- 6. fluid-filled space found between the body wall and digestive tract
- 7. hollow ball of cells
- 11. most of the skeleton
- 13. outer layer of skin