* Insects, spiders, crabs, lobsters, shrimp
* Name means “jointed foot” – arthropods have numerous jointed appendages
* Segmented bodies (segmentation - the repetition of identical anatomical units)
* Bilateral symmetry
* Complete digestive system
* most diverse animal phyla
* have a hard exoskeleton made of chitin, they must shed or molt the exoskeleton in order to grow.
* 3 body sections: Head, thorax, abdomen (specialized segments within each section).
* • Head: Responding to environment (eyes, antennae)
* Thorax: Locomotion (legs and/or wings)
* Abdomen: Reproduction