PARTII: COMPLEX ANIMALS CHAPTER 8. INVERTEBRATES 1.Phylum: Sponges 2.Phylum: Stinging cell 3.Phylum: Flatworm 4.Phylum: Roundworm 5.Phylum: Segmented

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PARTII: COMPLEX ANIMALS CHAPTER 8 Slide 2 INVERTEBRATES 1.Phylum: Sponges 2.Phylum: Stinging cell 3.Phylum: Flatworm 4.Phylum: Roundworm 5.Phylum: Segmented worms 6.Phylum: Mollusk (soft-bodied) 7. Phylum: Arthropods Class Insecta Arachnid Crustacean 8. Phylum: Echinoderms Starfish Ch 7 and 8 Outline VERTEBRATES 1.Phylum: Chordate Class 1.Jawless Fish 2.Cartilage Fish 3.Bony Fish 4.Amphibians 5.Reptiles 6.Birds 7.Mammals Slide 3 1.Arthropods (Jointed-legs) Invertebrate Largest phyla (3/4 of all animals on earth!!) Exoskeleton Segmented body Head Thorax Abdomen Bilateral symmetry Appendages Legs, wings, antennae Grow by molting Slide 4 1. Arthropod Class: Arachnid 8 legs ( 4 pairs) No antennae 2 body segments Spiders, scorpions, ticks Slide 5 1. Arthropod Class: Insecta 6 legs (3 pairs) 3 body segments 2 pairs of wings (most) Slide 6 1. Arthropod Class: Crustacea Mostly Marine animals 2 pairs of Antennae 4 pairs of walking legs Some...1 pair of pinchers Crab, lobster, shrimp, crayfish Sowbug Crayfish Slide 7 2.Spiny-skin animals (a.k.a. Echinoderm) Radial symmetry Spines on skin 5-part body Tube feet used for movement, feeding, attachment. Example: starfish Tube feet Slide 8 Vertebrates *(Chordates) Backbone Endoskeleton Most complex of all animals 7 Classes of Vertebrates Slide 9 1. Jawless Fish All aquatic (live in water) Cold-blooded Breathe with gills No jaws No scales (smooth skin) No bone Made of cartilage Ex: Lamprey parasitic Lamprey Slide 10 2. Cartilage Fish Skeleton made of Cartilage Jaws, scales, and paired fins Examples: Sharks rays Slide 11 3. Bony Fish Largest class of fish Skeletons are made of bone Swim bladder Fills with gas.floats Emptiessinks Slide 12 4. Amphibians Lives on water and on land (webbed feet) Cold-blooded (may hibernate) Fertilization in water. Why? Breathe = lungs and/or gills, and thru skin Can be poisonous(poison dart frog) Salamander Tree Frog Slide 13 5. Reptiles Dry scaly skin Cold-blooded Terrestrial (live and reproduce on land) Eggs with shellwhy important? Most have claws Anaconda killing a crocodile Slide 14 6. Birds Warm blooded Wings, beak, 2 legs Feathers Shelled eggs No teethbeak adapted to food Hollow bones Why important? Ostrich: Worlds largest bird Slide 15 7. Mammals Warm blooded Females : mammary gland Hair (whales and dolphins???) Develop offspring inside the body, except Kangaroo: pouch Platypus: egg-laying Slide 16 Examples of mammals... How are whales & dolphins different than other mammals? What are their adaptations?

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