1. Arthropods

2. Body Plans 3 main characteristics

3. exoskeleton Chitin Can be hard or leathery Can be hard or leathery Used like armor Molting for growing

4. Jointed appendages Arthro “joint” Pod “foot” ex. Antennae, claws, legs, wings, flippers

5. Segmented bodies Insects –3 Arachnids –2 Centipedes 100

6. Feeding Parasites, carnivores, filter feeders, herbivores

7. Respiration Aquatic arthropods Gills just under skeleton

8. Book gills (horseshoe crab) and book lungs (spiders) Appearance is book like Spiracle hole for air entrance

9. Insects Spiracle & Spiracle & Tracheal tubes Tracheal tubes Muscle movement pumps air

10. Internal transport Open circulatory system Blood out through arteries & then collect back

11. Response All have ganglia brain Body segments have brains Wasp w/out head can live Wasp w/out head can live

12. Sophisticated senses Compound eyes

13. Taste receptors On mouth antennae & legs (flies) On mouth antennae & legs (flies)

14. Movement Spider legs Spider legs flies flies

15. Growth & development Molting- shedding small shell Vulnerable time w/ soft shell

16. MetamorphosisEgg

17. Larvae

18. Pupa

19. Adult

20. Subphylums

21. Subphylum: Chelicerata

22. Characteristics 2 body parts CephalothoraxAbdomen

23. 2 sets of appendages on mouth Chelicerae & pedipalps

24. Examples Horseshoe crabs

25. Arachnids spiders

26. Mites & Ticks

27. Scorpions

28. Subphylum: Crustacea

29. Over 35,000 species Water fleas.25mm Japanese spider crab 6 meters across

30. examples Crabs lobster barnacles crayfish shrimp

31. Characteristics Cephlothorax & abdomen Hard exoskeleton Calcium carbonate Calcium carbonate

32. 2 pair of Antennae Used for sensory feeding or locomotion Used for sensory feeding or locomotion

33. Mandible- mouth part for feeding Short heavy structure

34. appendages Barnacles- filter feeding Crabs lobster claws swimmerets

35. Subphylum: Uniramia Insects & friends

36. examples Insects, millipedes, centipedes

37. Centipedes Carnivores w/ poison 15-170 pairs of legs Each segment has 1 pair of legs

38. Millipedes Scavengers 2 pairs of legs per segment

39. Insects 900,000 insect species New species found weekly

40. Body 3 part body Head thorax & abdomen 3 pairs of legs at thorax