Web Results


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.


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


The other species most related to our organism is the Pseudoceros bicolor, the two-colored flatworm, because they share the closes common ancestor. The second closest related species to our organism is the Pseudoceros paralaticlavus, otherwise known as the goldrim flatworm. Continue to learn about this flatworm's habitat. References | Home


Flatworms Definition, Examples, Classification and Characteristics Definition - What are Flatworms? Flatworms (Platyhelminthes) are a group of bilaterally symmetrical, acoelomate, soft-bodied invertebrate animals found in marine, freshwater as well as moist terrestrial environments.


The Genus of this flatworm is Maritigrella. That means that this species eats ascidians and sucks out animals with a tub called a pharynx. Species: crozieri. The Tiger Flatworm down to the species level is crozieri. That means that its technical name is Pseudoceros crozieri.


Examines the classification of flatworms. ... Go to the latest version. Flatworm Classification. Flatworms are divided into 4 classes, one free living class and three classes of obligate parasites. % Progress . MEMORY METER. This indicates how strong in your memory this concept is. Practice.


Flatworm - Annotated classification: There is no unanimity concerning the classification of platyhelminths. The following classification should be considered provisional. Phylum Platyhelminthes (flatworms) Flat, unsegmented worms; gastrovascular cavity and respiratory, skeletal, and circulatory systems absent; excretion by means of flame-bulb protonephridia; mesenchyme fills all spaces between ...


A planarian is one of many flatworms of the class Turbellaria.. Planaria are common to many parts of the world, living in both saltwater and freshwater ponds and rivers. Some species are terrestrial and are found under logs, in or on the soil, and on plants in humid areas.. Planaria exhibit an extraordinary ability to regenerate lost body parts. For example, a planarian split lengthwise or ...


Flatworms lack a respiratory or circulatory system; these functions take place by absorption through the body wall. Nonparasitic forms have a simple, incomplete gut; even this is lacking in many parasitic species. Movement in some flatworms is controlled by longitudinal, circular, and oblique layers of muscle.


Platyhelminthes are mostly worm like creatures that are dorsoventrally flattened, meaning they look like a ribbon, this is why they are called names such as Tapeworm, Flatworm, Fluke and Planarian. The Platyhelminthes are a successful phylum with around 25,000 known species divided into four classes.