Ascarides are closely related to tapeworms, despite the fact that Ascarides are considered roundworms, while tapeworms are considered flatworms. They are closely related because: They both attach themselves to the organism’s organs, usually the small intestines. They are both considered helminths. They both feed off of their human host, or other animal, and delay or stop the organisms’ absorption of nutrients from food. They are both found in humans when humans consume their eggs. Ascaris has a parasitism symbiotic relationship with humans. It benefits from humans by consuming the person’s food, while the human, also known as the host in this situation, suffers and has a diminished heath. Ascaris does this by attaching itself to the human’s organs, usually the small intestines.