Yes
Yes, planarians are non-parasitic flatworms
Yes, flatworms themselves are parasitic. Their eggs, however, can exist for long periods outside any host.
Planarians are neither parasitic or segmented. They are flatworms.
Flukes
Flatworms are divided into two groups, parasitic and nonparasitic. The parasitic types, which live off of other organisms, consist of Cestoda, Trematoda, and Monogenea flatworms.
If you mean parasitic flatworms, they belong to the phylum Platyhelminthes.
Yes. There are several species of parasitic flatworms.
An amphilinid is any member of the Amphilinidea, an order of parasitic flatworms.
Yes, tapeworms are common parasitic flatworms
they are consumer or predators and they are parasitic like tapeworms and flukes
Flatworms, both free-living and parasitic, lack a blood system because they have a flat body structure that allows for efficient diffusion of nutrients and gases directly through their skin. Their bodies are thin enough that all cells are close to the external environment, facilitating the exchange of oxygen and waste without the need for a circulatory system. Additionally, many parasitic flatworms absorb nutrients directly from their host, reducing the need for an internal transport system.
Parasitic flatworms have a modified epidermis called a tegument, which protects against the digestive enzymes and immune response of their host. The tegument is folded to increase surface area and to make absorption of nutrients more efficient.