Digestion in humans and earthworms

Unlike the turbellarians earthworms have a complete digestive system. This means that; The earthworms do not have a typical stomach like other animals do The earthworms have a digestive system with only one opening The earthworms feed similar to fungi; by absorbing materials across the body wall The earthworm digestive system has both a mouth and an anus

Transportes in the small intestine

Difference between Cephalochordates and Verts. What is a major difference between these groups for either digestion or waste management? (There are many...so you can put two or three of your favorites)