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Individual adult digeneans are of a single sex, and in some species slender females live in enclosed grooves that run along the bodies of the males, partially emerging to lay eggs. In all species the adults have complex reproductive systems, capable of producing between 10,000 and 100,000 times as many eggs as a free-living flatworm.


There are three types of flatworms: Planarians (Turbellaria) Flukes (Trematoda) Tapeworms (Cestoda) What is a Planarian? Planarians are an example of free-living flatworm. Planarians feed mostly on small organisms or organisms of dead bodies. Most live under rocks, on plant materials, or in freshwater.


Flatworms are members of the phylum Platyhelminthes. There are more than 20,000 known species of flatworms. They can be found in freshwater, marine, or damp terrestrial environment. Most flatworms are free-living, however, some are parasites. Parasites live in the host body and can be harmful to the host.


While there are several parasitic flatworms, tapeworms and flukes are the two most commonly studied types. These flatworms are capable of causing diseases in different host organisms, such as fish, dogs, domesticated animals, and humans.


This is a phylum that contains three main types of flatworms: flukes, planarians, and tapeworms. Most flatworms are parasitic , meaning that they live off a host organism causing harm to the host ...


Types of Flatworms (planarian, tapeworm, fluke) Planarian (also known as Dugesia)--lives in freshwater --mostly a scavenger, also feeds on protists --hermaphrodites --has a simple brain (ganglia) and nervous system, plus 2 eyespots (see handout on...


Flatworm: Flatworm, any of the phylum Platyhelminthes, a group of soft-bodied, usually much flattened invertebrates. A number of flatworm species are free-living, but about 80 percent of all flatworms are parasitic—i.e., living on or in another organism and securing nourishment from it. They are bilaterally


Planarians are free-living flatworms from the class Turbellaria. These flatworms are commonly found in freshwater habitats and in moist soil environments. They have elongated bodies and most species are brown, black, or white in color. Planarians have cilia on the underside of their bodies, which they use for movement. Larger planarians may ...


Most of the known species of flatworms are parasitic and can cause significant harm to humans. A flatworm under a microscope. Flatworms are known by several other names including flat worms and platyhelminths. The worms are unsegmented and soft-bodied invertebrates without body cavities and ...


Flatworms and bilateral symmetry Skills Practiced Information recall - answer the assessment questions by recalling basic information on the characteristics and different types of flatworms