Parasitic flatworms have very different bodies than free living flatworms. Which of the following are differences that you would expect to see between these two kinds of worms? (choose all that apply)**Note that all correct answers are required for credit. Parasitic flatworms will likely lack a digestive system Parasitic flatworms will lack sensory structures Parasitic flatworms will produce more eggs Parasitic flatworms will have well developed eyes

You are investigating a new kind of flatworm and give it food attached to charcoal pieces so that the digestive system can be seen under a microscope. When you look, you can see what you think is a mouth but cannot see an anus. What kind of digestive system would this worm have? -a hematocoel system -a closed digestive system -none of these choices are correct -an incomplete digestive system -radially symmetrical

Observe the body structure of the organism in the diagram. Which type of organism is this?     A. Cnidaria   B. Porifera   C. Mollusca   D. Arthropoda

The cnidocytes found in hydras and jellies are; Cells that secrete digestive enzymes Stinging cells Nerve conduction cells