Phylum ARTHROPODAThe most successful animal group tohave ever lived
Phylum Arthropoda  ARTHRO (joint) + PODA (foot)  have    jointed feet  jointed appendages (legs & other   outgrowths) ...
Phylum Arthropoda    body segmented  forming specific     body regions
Structure and Function  Feeding – complete digestive tract  Internal transport – open circulatory   system w/ dorsal hea...
Structure and Function    Reproduction – sexes separate
Taxonomy ofPhylum Arthropoda    Subphylum TRILOBITA    Subphylum CHELICERATA    Subphylum CRUSTACEA    Subphylum UNIRA...
Subphylum TRILOBITA  early arthropods  all extinct  pronounced segmentation  little or no variation in appendages
Subphylum CHELICERATA  CHEILOS (lips) + CHEIR (arm)  cepalothorax & abdomen  no antennae  6 pairs of appendages:     c...
Subphylum CHELICERATA  respiration: book lungs  e.g. spider         scorprion         tick & mite         horseshoe crab
Subphylum CRUSTACEA    two pairs of antennae    cephalothorax & abdomen    most marine, some freshwater; few     terres...
Structure & Function of theCrayfish    paired appendages: antennules, antennae,     maxillipeds, chelipeds, walking legs,...
Structure & Function of theCrayfish    excretion: green glands    circulation & respiration: heart      arteries  sinu...
Subphylum UNIRAMIA  one pair of antennae  uniramous   (unbranched)  jaw-like mandibles for feeding  compound eyes
Subphylum UNIRAMIAClass Chilopoda  •  w/ head & worm-like body made up of     similar segments  •  segments have one pair ...
Centipede
Subphylum UNIRAMIAClass Diplodopa  •  distinct head w/ worm like body  •  two pairs of legs per segment  •  head w/ one pa...
Millipede
Subphylum UNIRAMIAClass Insecta  •  most successful class  most terrestrial,     capable of flight  •  body regions: head...
Subphylum UNIRAMIA •  respiration: spiracles opening into    tracheae •  excretion: malpighian tubules •  metamorphosis:  ...
IncompleteMetamorphosis
CompleteMetamorphosis
And the famousest of them all…
Arthropoda
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Arthropoda

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Arthropoda

  1. 1. Phylum ARTHROPODAThe most successful animal group tohave ever lived
  2. 2. Phylum Arthropoda  ARTHRO (joint) + PODA (foot)  have jointed feet  jointed appendages (legs & other outgrowths)  chitinous exoskeleton for protection, but restricts size  MOLTING  bilateral symmetry, triploblastic, coelomate
  3. 3. Phylum Arthropoda  body segmented  forming specific body regions
  4. 4. Structure and Function  Feeding – complete digestive tract  Internal transport – open circulatory system w/ dorsal heart  Respiration – varied  Excretion – varied  Nervous system – brain + ventral nerve cord; sense organs (sight, smell, hearing, balance, taste, touch, etc.)
  5. 5. Structure and Function  Reproduction – sexes separate
  6. 6. Taxonomy ofPhylum Arthropoda  Subphylum TRILOBITA  Subphylum CHELICERATA  Subphylum CRUSTACEA  Subphylum UNIRAMIA   Class CHILOPODA   Class DIPLOPODA   Class INSECTA
  7. 7. Subphylum TRILOBITA  early arthropods  all extinct  pronounced segmentation  little or no variation in appendages
  8. 8. Subphylum CHELICERATA  CHEILOS (lips) + CHEIR (arm)  cepalothorax & abdomen  no antennae  6 pairs of appendages: chelicerae – claw-like, for feeding (pincers or fangs) pedipalps – sense chemicals, touch; for holding food, sperm transfer in males walking legs – 4 pairs
  9. 9. Subphylum CHELICERATA  respiration: book lungs  e.g. spider scorprion tick & mite horseshoe crab
  10. 10. Subphylum CRUSTACEA  two pairs of antennae  cephalothorax & abdomen  most marine, some freshwater; few terrestrial  e.g. lobster, crab, shrimp waterflea, barnacle, crayfish
  11. 11. Structure & Function of theCrayfish  paired appendages: antennules, antennae, maxillipeds, chelipeds, walking legs, swimmerets, uropods  capable of self-amputation & regeneration
  12. 12. Structure & Function of theCrayfish  excretion: green glands  circulation & respiration: heart  arteries  sinuses  gills  sense organs: compound eyes, antennules, antennae, statocyst  reproduction: dioecious; fertilized eggs attach to female s swimmerets… young, too (for a while)
  13. 13. Subphylum UNIRAMIA  one pair of antennae  uniramous (unbranched)  jaw-like mandibles for feeding  compound eyes
  14. 14. Subphylum UNIRAMIAClass Chilopoda •  w/ head & worm-like body made up of similar segments •  segments have one pair of legs •  head w/ one pair of antennae & various mouthparts •  e.g. centipede ( hundred legger )
  15. 15. Centipede
  16. 16. Subphylum UNIRAMIAClass Diplodopa •  distinct head w/ worm like body •  two pairs of legs per segment •  head w/ one pair of antennae & mouthparts •  e.g. millipede ( thousand legger )
  17. 17. Millipede
  18. 18. Subphylum UNIRAMIAClass Insecta •  most successful class  most terrestrial, capable of flight •  body regions: head, thorax & abdomen •  pair of antennae, several mouthparts, 3 pairs of walking legs + wings •  variations: mouthparts, body form, legs
  19. 19. Subphylum UNIRAMIA •  respiration: spiracles opening into tracheae •  excretion: malpighian tubules •  metamorphosis: incomplete (e.g. grasshopper, cockroach) egg  nymph  adult complete (e.g. butterfly, bee, fly, beetle) egg  larva  pupa  adult
  20. 20. IncompleteMetamorphosis
  21. 21. CompleteMetamorphosis
  22. 22. And the famousest of them all…

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