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PHYLUM ARTHROPODA

PHYLUM ARTHROPODA. CHARACTERISTICS. Largest Phylum in Animal Kingdom ~ One million species Arthropod = joint foot Paired, jointed appendages. CHARACTERISTICS. Segmented bodies Head Thorax (mid-body region) Abdomen Chitinous exoskeleton Tough, brittle, breaks easily Provides protection

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PHYLUM ARTHROPODA

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  1. PHYLUM ARTHROPODA

  2. CHARACTERISTICS • Largest Phylum in Animal Kingdom ~ One million species • Arthropod = joint foot • Paired, jointed appendages

  3. CHARACTERISTICS • Segmented bodies • Head • Thorax (mid-body region) • Abdomen • Chitinous exoskeleton • Tough, brittle, breaks easily • Provides protection • Prevents water loss

  4. CHARACTERISTICS • Open circulatory system • Complete digestive tract • Ventral nervous system • Cavities surrounding gonads and excretory system

  5. CHARACTERISTICS • Bilaterally symmetrical • Metamorphosis • Ecdysis – shed exoskeleton • Aerial, Terrestrial, Aquatic

  6. SUBPHYLUM • Subphylum Chelicerata • Subphylum Crustacae • Subphylum Uniramia

  7. SUBPHYLUM CHELICERATA • Spiders • Mites • Ticks • Horseshoe crabs • Sea spiders

  8. SUBPHYLUM CHELICERATA • Absence of antennae • Presence of chelicerae • Unbranched appendages

  9. SUBPHYLUM CHELICERATA • Four pairs of walking legs • Two body regions • abdomen • cephalothorax (head + thorax) • Predominantly terrestrial

  10. SUBPHYLUM CRUSTACEA • Crayfish • Shrimp • Lobster • Crabs

  11. SUBPHYLUM CRUSTACEA • Mostly aquatic • Head with two pairs antennae • Biramous appendages

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