Across
- 4. amphibians are classified as such because they have two ways to obtain ________ during their lifetime
- 9. worms would fall into this category
- 10. snakes, toads, and alligators use this to regulate their body temperature
- 11. What type of animals are multicellular?
- 12. organisms that have this arrangement do not have a balance to their body structure
- 15. these are what come together to create organs in multicellular, living organisms
- 17. these mammals include kangaroos and possums
- 20. these fun creatures have an endoskeleton that gives their body structure and protection
- 21. this is the type of mammal that you are
Down
- 1. if you can fold a piece of paper in half and the edges line up it is displaying this
- 2. arthropods wear this as an out layer of protection for their body
- 3. this group of animals is where you would categorize most animals on Earth
- 5. animal cells do not have this organelle because animal cells do not perform photosynthesis
- 6. I can't imagine it, but worms do have a __________
- 7. this is where a cnidarian would take food into its body
- 8. these are endotherms with feathers
- 13. animals that display radial symmetry often have ________ lines of symmetry
- 14. these vertebrates retain their throat pouch and use it for something else after birth
- 16. the notochord protects this in a vertebrate's body
- 18. how many main groups of invertebrates that have been identified by scientists
- 19. this is the level of organization that vertebrates are classified in
