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