The mouth is on one end of the body and the anus is on the opposite end. This type of organization means the roundworms are more complex than flatworms, yet they are less complex than earthworms.
Do roundworms have a mouth?
Features of Roundworms Unlike the flatworms, the roundworms have a body cavity with internal organs. A roundworm has a complete digestive system, which includes both a mouth and an anus.
What kind of mouth does a worm have?
Do worms have mouths, and what do they eat? Worms have strong, muscular mouths, but no teeth. They have a varied diet that includes decaying vegetation, soil, dead animals and even some living organisms.
Do roundworms have a jaw?
Here's another quirk: although their bodies are bilaterally symmetrical, like that of a human, nematode heads are radially symmetrical, like a starfish. Roundworms may have either three or six jaws, often lined with teeth.
How many lips do roundworms have?
The nematode mouth is usually circular and may contain up to six lips.
