A roundworm has a complete digestive system, which includes both a mouth and an anus. This is a significant difference from the incomplete digestive system of flatworms. The roundworm digestive system also include a large digestive organ known as the gut. 1 июн. 2020 г.
Do roundworms have a simple or complex digestive system?
Unlike the flatworms in which food and waste enter and exit from the same opening, nematodes have a complete digestive system. An animal with a complete digestive system has a mouth at one end, a long tube with specialized parts in the middle, and an anus at the other end.
Do roundworms have a complete or incomplete digestive system?
Nematodes are pseudocoelomates and have a complete digestive system with a distinct mouth and anus.
What is the basic structure of a roundworms digestive system?
The alimentary canal of roundworms is complete, with both mouth and anus. The mouth is surrounded by lips bearing sensory papillae (bristles). The esophagus, a conspicuous feature of nematodes, is a muscular structure that pumps food into the intestine; it differs in shape in different species.
What is roundworm excretory system?
The structure of the excretory system of round worm is very simple. The system consists of two-long tubes at the two sides of the body against the lateral lines. Meeting together at the other end, the two tubes open outside through the excretory pore or cloacal aperture.
More useful articles on a similar topic 👇
Do roundworms digest food for their host organism?Do roundworms digest food?