parts to know
head
body
characteristics
-wheel bearing animals
-anterior end with ring of cilia around mouth
-unlined body cavity, pseudocoel
-complete digestive system
-sexual reproduction
-parthenogenesis: new individuals from unfertilized eggs
head
-cilia
-mouth
-pharynx/mastix: grinding
body
-esophagus
-stomach
-pseudocoel
-foot
symmetry
bilateral, body tapers at floor