Across
- 3. A flexible rod found in chordate animals
- 8. The effort to define the boundaries between the various created kinds of animals
- 10. Type of gut where the digestive tract has 2 openings
- 11. Where an object can be divided by one or more imaginary lines into mirror-image halves
- 14. Animals that never have a notochord or bony vertebrate
- 15. Animals that can regulate their internal temperatures
- 18. The type of cells that all animals have
Down
- 1. Type of gut where the digestive tract has one opening
- 2. Animals that have a notochord anytime during its life
- 4. The lack of mirror image halves
- 5. Scientist that studies animals
- 6. Animals that depend on the environment to regulate their body temperatures
- 7. Animals with vertebrae that protects the spinal cord
- 9. The digestive tract or part of the body that takes in food, digests it and absorbs it
- 12. Symmetry where there is more than one possible imaginary lines to divide into mirror halves
- 13. Where most animals have their sense organs and brains clustered at one end of the body
- 16. Symmetry where the midline divides the object into two halves
- 17. A hollow within the body that has vital organs