1. Arthropoda
BY: Drishti Chawla

3. Arthropoda = “Jointed Feet”
Contains 1,000,000+ species
Major Characteristics:
Invertebrate
Exoskeleton made from protein & chitin... undergoes regular ecdysis (molting)
Repeated segments, each w/pair of appendages helps w/ locomotion, feeding, sensation
Bilateral Symmetry
Coelomates body cavity lined w/ mesoderm tissue
Open Circulatory System no heart, blood vessels pump along hemolymph (blood + interstitial fluid)
Tube Digestive Plan food in from mouth, out through anus
Protostomes mouth first

4. 4 Subphyla Chelicerata Myriapoda Crustacea Hexapoda Abdomen
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Thorax
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Head
4 Subphyla
Chelicerata
Myriapoda
Crustacea
Hexapoda