1. Arthropods! Do Now: 1.Turn in Earthworm dissection

2. Phylum Arthropoda Biggest phylum of animals currently alive and extinct. Several _________ different species Exist in every environment, in almost every ecosystem on Earth. By any measure, the most “successful” animal phylum. ______ of all known species of animal are arthropods.

3. What Makes an Arthropod? _______________: – Hard, protective outer “shell.” – Used for movement – contains_________, a ________________.

4. Exoskeleton for ___________________ Your muscles are attached to an _______________. An exoskeleton serves the same purpose

5. What Else Makes an Arthropod? ____________________ symmetry

6. _______________________ body plan Each segment has at least 1 pair of _____________. – Legs, antenae, flipers, claws, etc. are all appendages. – Some segments may be fused together.

7. 3 Main Body Sections Called _____________: Some may be fused

9. ___________ Appendages (and lots of ‘em)

10. Recap: Arthropod Characteristics ____________________________ ___________________________ symmetry Segmented body plan (3 ___________: head, thorax, abdomen) Jointed appendages (many pairs). Note: arthropod means “________________________.”

11. Arthropod Circulatory System ________________ circulatory system with heart.

12. Arthropod Respiration Gills/__________________: oxygen diffuses into blood ________________: air moves into insect directly

13. Types of Arthropods Domain: ____________ Kingdom: ___________ Phylum: Arthropoda Classes: ________________________________________ ________________________________________

14. The Family Tree

15. Class Crustacea: The Crustaceans Only arthropod class with ________________ _____________________________________.

16. Includes crabs, lobsters, shrimp, as well as ___________. Class Crustacea: The Crustaceans

17. Crustacean Orders “True” Crustaceans = Order ________________ – 5 pairs of legs – 2 tagmata Cephalothorax Abdomen “Pillbugs” = Order _________ – 7 pairs of legs – 3 tagmata

19. Class Insecta _____________ of antennae ____________ of legs ______ tagmata Wings or wingless

20. Insect Diversity Biggest order of animal on Earth Over ______________ documented species. Highest estimates suggest up to 30,000,000 species may exist.

21. Class ____________________: Spiders, Ticks, Scorpions, Mites, etc. _______ antennae __________ pairs of legs

22. Arachnids Trilobites = Extinct Arachnids

23. Centipedes And Millipedes: Class Myriapoda _____________of antennae. Two tagmata: _____________ and _________ 2 pairs of legs per segment Millipede subclass diplopoda 1 pair of legs per segment centipede subclass chilopoda

24. Recap: Arthropod Family Tree Phylum Arthropoda Deca- poda Iso- poda many ordersmany orders, including extinct trilobites Chilo poda diplo poda