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Animal Classification

Animal Classification. THE ANIMAL KINGDOM BASIC CHARACTERISTICS OF ANIMALS: 1. 2. 3. N INE ANIMAL PHYLA INVERTEBRATES: VERTEBRATES (CORDATES): (1 phylum). MULTICELLULAR ORGANISMS. CAPABILITY OF LOCOMOTION. MUST INJEST FOOD.

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Animal Classification

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  1. Animal Classification

  2. THE ANIMAL KINGDOM BASIC CHARACTERISTICS OF ANIMALS: 1. 2. 3. NINE ANIMAL PHYLA INVERTEBRATES: VERTEBRATES (CORDATES): (1 phylum) MULTICELLULAR ORGANISMS CAPABILITY OF LOCOMOTION MUST INJEST FOOD (8 PHYLA) ALL LACK INTERNAL SKELETON, SOME HAVE EXOSKELTON OR SHELL INTERNAL SKELTON MADE OF BONE/ CARTILAGE

  3. 1. PORIFERA: • ‘Pore- Bearing” • Filter feeders • Asymmetrical • Feed and get rid of wastes thru diffusion • Sessile • Ex.- sponges

  4. 2. CNIDARIA • Have stinging tenacles • Stun prey with toxins • Prey is drawn into mouth and dissolved/ digested • Radial symmetry EXAMPLES: CORAL, JELLYFISH, SEA ANEMONE

  5. Polyps: Sea anemones

  6. Purple striped jelly, Pelagia panopyra

  7. 3. PLATYHELMINTHES: • One opening for ingestion and egestion • Primitive nervous system • Exchange gases by diffusion thru moist membranes • Bilateral symmetry EXAMPLES: PLANARIA, FLUKE, TAPEWORM

  8. 5. ANNELIDA • Segmented worms • Each segment has a nervous. circulatory, excretory, muscular system • Bilateral symmetry • First organism with complex body systems EXAMPLES: LEECH, EARTHWORMS

  9. 6. ARTHROPODA • Animals with jointed appendages • Have an exoskeleton • They shed their exoskeleton (molt) • We study crustaceans – these are marine arthropods EXAMPLES: SHRIMP, LOBSTER, CRAB, BARNACLE

  10. 7. MOLLUSCA • There are 3 classes: gastropods, bi-valves, cephalopods • Have an external shell • Have bi- lateral symmetry • Cephalopods are extremely intelligent • ex.- squid, octopus, cuttlefish, nautilus

  11. 8. ECHINODERMATA • Have spiny bodies • Radial symmetry • Benthic- bottom dwellers • Central mouth on ventral surface • ex.- sea urchin, sea star, sea cucumber, sand dollar

  12. 9. CHORDATA • Have a backbone that protects the spinal cord • Most developed nervous system • Contains animals that we are most familiar with • ex.- fish, mammals, reptiles, amphibians

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