2. The main difference is prokaryotes lack a nucleus, and eukaryotes have a nucleus. 3. These groups of organisms are eukaryotes. 4. Parasitism is a relationship where one organism is benefited and the other is harmed. Commensalism is where one organism benefits and the other is unharmed. And mutualism is where both species benefits. 5. Host refers to the organism that is harmed and provides something to the parasite. The parasite lives on or in the host and harms them in some way. Definitive host is a parasite that would live their entire life cycle in a host. An intermediate host has a parasite that temporarily live on the host. 6. Protists are a collection of eukaryotes that lack distinct tissues. Protozoans are unicellular and heterotrophic. Algae is …show more content…
Nematoda C. Platyhelminthes D. Nematoda E. Nematoda 14. A. Taenia saginata have definitive host. They infect cows and are spread to humans by eating undercooked meat. It can cause the disease taniasis. This usually goes unnoticed until the infection is severe, at that point it can cause weight loss. B. Ascaris lumbricoides adults live in human intestines, and the eggs are excreted. Human may become infected by eating contaminated food or water. It then causes ascariasis, and most people go without symptoms. C. Fasciola hepatica infects humans by eating infected aquatic plants carrying the cyst. This can cause fascioliasis. The symptoms include weight loss and possible liver damage. D. Enterobius vermicularis adults live in the human intestine, and eggs are deposited near the anus. The eggs can be moved to clothes or linens or other surfaces and infest another human. It causes the disease enterobiasis, which causes the symptom on anal itching. E. Ancylostoma duodenalis is a hookworm. The adults live in the small intestine and the eggs are excreted with the feces. The larva can live in the soil and can penetrate humans walking around barefoot. It can cause ancylostomiasis, which can cause