are flatworms nematodes
Best Answer: Platyhelminthes consists of flat worms. They are dorsoventrally flattened. Have a gastrovascular cavity or no digestive system. No segments. Example) Planerian Nematoda is an unsegmented pseudocoelomate. No circulatory system. Consists of Roundworms. Annelia consists of segmented worms. Asker's rating. 1  Difference Between Annelida And Nematoda. 2  Thank you for asking this question because it is an answer i am seeking also. 3  Platyhelminthes are flatworms, nematodes are roundworms, and annelids are segmented worms. 4  platyhelminthes-1.they are flat worms. Platyhelminthes are flatworms, nematodes are roundworms, and annelids are segmented worms. Flatworms are aceolomates, meaning they have  no body cavities. The gut is completely surrounded by tissues and organs. Roundworms have a body cavity between the digestive tract and muscles. Free-living flatworm (flatworm) head with 2 eye slits, sense chemicals through a flap on each side, the mouth is found on the ventral surface, and they are found under rocks in streams Flukes (flatworm) Platyhelminthes are flatworms, nematodes are roundworms, and annelids are segmented worms. Flatworms are aceolomates, meaning they have no body cavities. The gut is completely surrounded by tissues and organs. Roundworms have a body cavity between the digestive tract and muscles. Segmented worms have a fluid-filled body cavity located within muscle tissue. In order from least advanced to most advanced: plateyhelminthes, nematodes, annelids. Flukes (flatworm) live as parasites, have a sucker that allows them to attach to their prey, though protective covering, reproductive structures occupy the entire body covering, and some have intermediate stages where larva develop inside a host. The phylum Nematoda, or roundworms, includes more than 28,000 species with an estimated 16,000 parasitic species. The name Nematoda is derived from the Greek word “nemos,” which means “thread.” Nematodes are present in all habitats and are extremely common, although they are usually not visible ([link]). Tapeworms (flatworm) live as parasites, inhabit digestive tracts of vertebrates, very long and ribbon-like body, have no digestive system because they live in digestive tracts Nematodes are Start studying Flatworms, Nematodes & Annelids. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Free-living species of flatworms are predators or scavengers, whereas parasitic forms feed from the tissues of their hosts. Most flatworms have an incomplete digestive system with an opening, the “mouth,” that is also used to expel digestive system wastes. Some species also have an anal opening.
No, flatworms are not nematodes.