Chapter 10 / Animal Classification

6. Animals that have complete guts but are otherwise very simple
10. endothermic vertebrates that are connected to their developing young by umbilical cords
11. arthropods that have eight or ten legs
12. vertebrates that have scales and lungs
14. ectothermic aquatic vertebrates that have gills and fins
17. arthropods that have six legs and three body segments
19. vertebrates that have scutes and teeth
20. vertebrates that have feathers and lack teeth
21. animals that live in water as young and on land as tailless adults
22. vertebrates that have fur or hair
25. tailed vertebrates that have moist scaleless skin
26. animals that have soft and flattened bodies

1. Marin animals that have stinging cells to paralyze and capture prey
2. vertebrates that have gills and bony skeletons and are usually covered by scales
3. animals that have an exoskeleton and jointed appendages
4. animals that have spiny skins and live in the ocean
5. aquatic vertebrates that have gills but lack scales and paired fins
7. scaly ectothermic vertebrates that molt their skin
8. aquatic vertebrates that have jaws, scales and endoskeletons made of cartilage
9. endothermic vertebrates that have pouches
11. mollusks that have multiple tentacles
13. arthropods that have eight legs and two body segments
15. smooth-skinned vertebrates that typically live in water when young but can live on land as adults
16. animals that lack symmetry and cephalization
18. mollusks that have two piece hinged shells
23. animals that have soft bodies and frequently shells
24. vertebrates that have two hard bony shells