Roundworms look similar to an earthworm and can produce 200,000 eggs daily. Approximately 1,008 million people are infected, making it the most common worldwide. The most frequent symptom from roundworms is upper abdominal discomfort. Other symptoms are Asthma, eye pain, insomnia, and rashes due to the secretions or waste products from the worms. Large numbers can cause blockages in the intestinal tract, hemorrhage when penetrating the intestinal wall, appendicitis, peritonitis, abscesses in the liver, hemorrhagic pancreatitis, loss of appetite, and insufficient absorption of digested foods. Adults grow to 15 inches long.
Jellyfish are bell shaped and roundworms aren't. Jellyfish sting and roundworms do not. jellyfish are radial and and roundworms are not.
they are round
cylinderical
They get into your body through raw food.
Roundworms have long, cylindrical bodies that taper at both ends. They have a complete digestive system with a mouth and an anus, and their bodies are covered in a protective cuticle. Roundworms also have a fluid-filled body cavity called a pseudocoelom.
roundworms have 2 body opening. The mouth and the anus
Roundworms have a cylindrical body shape with a distinct head and tail. They have a digestive system that runs through the length of their body and a nervous system with a simple brain. Their bodies are covered by a cuticle that helps protect them.
roundworms
Bilateral symmetry.
roundworms
Roundworms have a simple circulatory system with a dorsal blood vessel that runs the length of the body and pumps nutrients and oxygen to the tissues. The blood is not contained within vessels but rather flows freely in the body cavity. Gas exchange occurs through diffusion across the body wall.
Because they are parts of phylam Annelida as I have read