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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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Presentation on theme: "PARTII: COMPLEX ANIMALS CHAPTER 8. INVERTEBRATES 1.Phylum: Sponges 2.Phylum: Stinging cell 3.Phylum: Flatworm 4.Phylum: Roundworm 5.Phylum: Segmented."— Presentation transcript:

1 PARTII: COMPLEX ANIMALS CHAPTER 8

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

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

4 1. Arthropod Class: Arachnid 8 legs ( 4 pairs) No antennae 2 body segments Spiders, scorpions, ticks

5 1. Arthropod Class: Insecta 6 legs (3 pairs) 3 body segments 2 pairs of wings (most)

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

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

8 Vertebrates *(Chordates) Backbone Endoskeleton Most complex of all animals 7 Classes of Vertebrates

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

10 2. Cartilage Fish Skeleton made of Cartilage Jaws, scales, and paired fins Examples: –Sharks –rays

11 3. Bony Fish Largest class of fish Skeletons are made of bone Swim bladder –Fills with gas….floats –Empties…sinks

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

13 5. Reptiles Dry scaly skin Cold-blooded Terrestrial (live and reproduce on land) –Eggs with shell…why important? Most have claws Anaconda killing a crocodile

14 6. Birds Warm blooded Wings, beak, 2 legs Feathers Shelled eggs No teeth…beak adapted to food Hollow bones –Why important? Ostrich: Worlds largest bird

15 7. Mammals Warm blooded Females : mammary gland Hair (whales and dolphins???) Develop offspring inside the body, except… –Kangaroo: pouch –Platypus: egg-laying

16 Examples of mammals... »How are whales & dolphins different than other mammals? What are their adaptations?


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