Across
- 4. Name given to animal body cavity
- 6. Symmetry that describes right and left halves
- 7. Name for segmented body plan
- 9. Animals with endoskeletons
- 10. Acquire nutrients from an external source
- 12. Means living on both land and in the water
- 14. Cnidarians have this type of symmetry
- 15. The number of key developments in animal evolution
- 16. Only animals that lacks true tissue
Down
- 1. Animals that lay eggs eg duck-billed platypus
- 2. Animals that have an amniotic egg and can reproduce on land
- 3. Phylum with notochord and pharyngeal pouches
- 5. Means “stomach-footed” animal
- 8. Word describing distinct head with brain and sensory organs
- 11. Animals able to generate internal heat
- 13. Class that represents birds