1. Sponges No true tissues or organs No true tissues or organs Sessil- Do not move Sessil- Do not move Filter feeder Filter feeder

2. Cnidarians Cnidarians Sting and capture prey Sting and capture prey Two body plans–polyp and medusa Two body plans–polyp and medusa Medusa Polp

3. Flat worms Approximately 9,000 species Approximately 9,000 species They are flat, examples are tapeworm, planarian They are flat, examples are tapeworm, planarian Most parasitic Most parasitic

4. Most small, and have cylinder bodies Most small, and have cylinder bodies A one way digestive system A one way digestive system Are carnivores, herbivores, omnivores, and some parasites Are carnivores, herbivores, omnivores, and some parasites Round worms Round worms

5. Segmented Worms Earthworms, sea worms, leech Earthworms, sea worms, leech Body in segments Body in segments

6. Mollusks Soft bodies usually covered with Soft bodies usually covered with shells shells 3 major groups: gastropods, bivalves, 3 major groups: gastropods, bivalves, and cephalopods and cephalopods Snail=Gastropod Squid=Cephalopod Bivalve=Clam Snail=Gastropod Squid=Cephalopod Bivalve=Clam

7. Millipedes Four legs per segment Four legs per segment Most are herbivores Most are herbivores

8. Centipedes Two legs per segment Two legs per segment Are predators Are predators Some inject venom into their prey Some inject venom into their prey

9. Insects 6 legs, 3 pairs 6 legs, 3 pairs 1 pair antennae, 1 or 2 pairs of wings 1 pair antennae, 1 or 2 pairs of wings 3 body regions: head, thorax, abdomen 3 body regions: head, thorax, abdomen

10. Crustaceans 3 body sections and usually 3 body sections and usually 3 appendages for chewing 3 appendages for chewing 5 or more pairs of legs 5 or more pairs of legs Waxy exoskeleton made of chitin (polymers) -Ex. Lobster, crayfish, shrimp Waxy exoskeleton made of chitin (polymers) -Ex. Lobster, crayfish, shrimp

11. Echinoderms Live on the ocean floor Live on the ocean floor Sea Stars Sand Dollars are examples Sea Stars Sand Dollars are examples Some can regenerate Some can regenerate

12. Fish A vertebrate that lives in H2O and has Fins A vertebrate that lives in H2O and has Fins Largest Group Vertebrates Largest Group Vertebrates Have Gills and Scales Have Gills and Scales

13. Chordates-Vertebrates Chordates-Vertebrates Amphibians class Begin in H2O, Move to Land, Return to H2O to reproduce Begin in H2O, Move to Land, Return to H2O to reproduce Smooth skin and slimy Smooth skin and slimy Most can breath through their skin and lungs Most can breath through their skin and lungs Draw and label the earthworm on page 332

14. Chordates-Vertebrates Reptiles class Lay an Egg w/leathery shell Lay an Egg w/leathery shell Scaly Skin Scaly Skin Lizards, snakes, turtles, alligators, crocodiles/Cold Blooded Lizards, snakes, turtles, alligators, crocodiles/Cold Blooded

15. Arachnids No antennae No antennae 2 body sections: 2 body sections: 8 legs 8 legs

16. Chordates-Vertebrates Birds Feathers/ Flight Feathers/ Flight Egg w/hard shells Egg w/hard shells 4 chambered heart/Light Bones 4 chambered heart/Light Bones

17. Chordates-Vertebrates Mammals class Mammals class Most produce offspring inside the female body Most produce offspring inside the female body Fur/hair Got milk! Fur/hair Got milk! Endothermic/ Warm Blooded Endothermic/ Warm Blooded

18. Chordates-Vertebrates Have a nerve cord Have a nerve cord Have bone/cartilage around nerve cord Have bone/cartilage around nerve cord Fish class Fish class First vertebrates First vertebrates Breath w/gills Breath w/gills Cold blooded exothermic More species than all other vertebrates Cold blooded exothermic More species than all other vertebrates 2 chambered heart 3 types: jawless, cartilaginous, bony 2 chambered heart 3 types: jawless, cartilaginous, bony Swim bladder controls buoyancy Swim bladder controls buoyancy Draw and label the fish on page 385 Draw and label the fish on page 385 Draw and label the earthworm on page 332