Do roundworms have excretory system?
Do roundworms have excretory system? Like flatworms, roundworms have excretory, nervous, and reproductive systems. Roundworms have a thick substance called a cuticle on the surface of their bodies that is secreted by the outer epidermal cells. Do nematodes have organ systems? While nematodes have digestive, reproductive, nervous and excretory systems, they do not have discrete circulatory or respiratory systems. What is the excretory system of platyhelminthes and nematoda? Flatworms have an excretory system with a network of tubules throughout the body that open to the environment and nearby flame cells, whose cilia beat to direct waste fluids concentrated in the...