| A | B |
|---|
| SPONGES | 2 cell layers, hollow bodies with one opening, can't move |
| HOLLOW BODIES | mouth surrounded by tentacles with stinging cells |
| FLATWORMS | flat body with one opening |
| ROUNDWORMS | tube-like body with two openings |
| SEGMENTED WORMS | worm with segmented body |
| MOLLUSKS | soft bodies with a mantle that may make a shell |
| ECHINODERMS | spiny skins |
| ARTHROPODS | jointed legs and segmented bodies |
| ARACHNIDS | arthropods with 8 legs, 2 body parts, no antennae |
| INSECTS | arthropods with 3 body parts, 6 legs, 2 antennae, wings |
| CRUSTACEANS | arthropods with 10 legs, 3 body parts, 4 antennae |
| COLD BLOODED | body temperature determined by the surroundings |
| WARM BLOODED | body temperature remains constant |
| PARASITE | lives in body of other animal and gets food from digested food of host |
| 75% | percent of animals that are arthropods |
| 97% | percent of animals that are invertebrates |
| TENTACLES | used to capture prey and for protection |
| MOLTING | arthopod sheds its exoskeleton in order to grow |
| REGENERATION | ability to regrow a lost limb |
| ANTENNAE | used by arthropods for touch, taste, smell |
| EXOSKELETON | protects and supports an arthropod's body |
| MANTLE | protective covering that mollusks have, may make a shell |
| EARTHWORM | one segmented worm that doesn't live in water |
| TAPEWORM | humans can get this flatworm by eating undercooked meat |
| VERTEBRATES | animals with backbones |
| INVERTEBRATES | animals without backbones |
