1 июн. 2020 г. · The word "worm" is not very scientific. This informal term describes animals (usually invertebrates) that have long bodies with no arms or legs.
Do roundworms have a jaw?
Roundworms may have either three or six jaws, often lined with teeth.
Do roundworms head?
Roundworms are characterized by a simple worm-like structure with a lack of features such as cilia or a well-defined head. They have an internal body cavity, called a pseudocoelom, which looks like a tube within a tube and runs the whole length of their bodies.
How does a roundworm eat?
Diet/Feeding Nematodes feed on organic matter, both dead and alive such as small animals including other worms, or on diatoms, algae, fungi and bacteria. Some eat plants by piercing the stem or root and sucking out the contents.
Where is the mouth of a roundworm?
Roundworms have tube digestive systems, meaning ingested food travels a single route. It enters through the mouth, is ground down in the pharynx, is digested in the gut, and is eliminated from the anus. The mouth is on one end of the body and the anus is on the opposite end.
