Arthropoda BY: Drishti Chawla

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