An exoskeleton made of chitin, jointed appendages and well developed sensory structures are characteristics that classify the Daphnia magna observed in lab as a member of the Crustacea.
Daphnia Magna is a small planktonic organism that belongs to the subclass Phyllopoda. It inhabits a variety of freshwater environments. Most common it is found in the northern hemisphere, and in South Africa.
Food moves through your GI tract by a process called peristalsis. The large, hollow organs of your GI tract contain a layer of muscle that enables their walls to move.