A)They aid in digestion.
B)They develop into cnidocytes and can be used in defense.
C)They develop into the nerve net and are used to detect prey.
D)They produce new epidermal tissue to replace the old tissue.
E)They are a form of asexual reproduction.

A)The embryos of flatworms are triploblastic.
B)Flatworms are deuterostomes.
C)Flatworms have a sac body plan with an incomplete gut.
D)Flatworms are free-living or parasitic.
E)Flatworms are in phylum Platyhelminthes.

A)eating infected snails.
B)drinking water contaminated with eggs.
C)eating infected fish that was undercooked or raw.
D)swimming or wading in infected water,where the cercariae enter the skin.