- Flatworms, or Platyhelminthes, are a group of bilaterally symmetrical, acoelomate, soft-bodied invertebrate animals12345. They are found in marine, freshwater as well as moist terrestrial environments1. Flatworms are legless animals with a flattened appearance and are covered in a slime-like substance that aids their movement and keeps them from drying out3. There are about 20,000 species in this group, and they can be free-living or parasitic4. One of the best-known flatworms is the tapeworm4.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Flatworms (Platyhelminthes) are a group of bilaterally symmetrical, acoelomate, soft-bodied invertebrate animals found in marine, freshwater as well as moist terrestrial environments.www.microscopemaster.com/flatworms.htmlThe flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning "worm") are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.en.wikipedia.org/wiki/FlatwormAs their name suggests, flatworms are legless animals with a flattened appearance. They are shiny, covered in a slime-like substance that aids their movement and keeps them from drying out. Some flatworms may be confused for dark slugs, but they lack the tentacles found in slugs and do not have any texture to the body.content.ces.ncsu.edu/terrestrial-flatwormshammerh…Flatworms are the simplest of the worm groups. There are about 20,000 species in this group. Flatworms are found many places and can be free living or parasitic. A parasite lives off another living thing called a host and can be harmful. One of the best known flatworms is the tapeworm.animalcorner.org/animals/flatworms/The flatworms are acoelomate organisms that include free-living and parasitic forms. The nematodes, or roundworms, possess a pseudocoelom and consist of both free-living and parasitic forms.pressbooks.umn.edu/introbio/chapter/animalsflatw…
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Flatworm | Reproduction, Examples, & Characteristics | Britannica
WEBFlatworms are soft-bodied, usually flattened invertebrates that belong to the phylum Platyhelminthes. They include free-living and parasitic forms, such as flukes, …
Habitats and types of flatworms | Britannica
WEBFlatworms are soft-bodied, usually much-flattened worms that live in various aquatic and terrestrial habitats. They are of three main types: turbellarians, trematodes, and cestodes, which differ in their life cycles …
11.6: Flatworms - Biology LibreTexts
WEBFlatworms range in length from about 1 millimeter (0.04 inches) to more than 20 meters (66 feet). They have a flat body because they do not have a coelom or even a pseudocoelom. They also lack a respiratory system.
Flatworm - Parasitism, Regeneration, Asexual Reproduction
WEBMany flatworms show highly specific adaptations to internal host environments. The typical flatworm body is flattened and leaflike or tapelike. The tegument differs between free …
ADW: Platyhelminthes: INFORMATION
WEBflatworms. By Phil Myers. Flatworms are unsegmented, bilaterally symmetrical worms that lack a coelom (acoelomate) but that do have three germ layers. Some forms are free …
What makes flatworms go to pieces - Nature
WEBAug 14, 2019 · Planarian flatworms can break off fragments of themselves that regenerate to form new, complete worms. This process, called fission, is regulated by Wnt and TGF-β signalling and …
Introduction to the Platyhelminthes - University of …
WEBLearn about the simple, bilaterally symmetrical animals that are flat and lack a body cavity. Find out how they are classified, where they live, and what diseases they cause.
The secret of the indestructible flatworm - WUR
WEBCut the Schmidtea mediterranea in half, and it still won’t die. The head piece will grow a new tail, and the tail will grow a new head. A week later, you have two worms. …
Platyhelminthes: Current Biology - Cell Press
WEBApr 3, 2017 · Platyhelminthes (flatworms) have captivated the imagination of biologists for centuries. Indeed, planarian flatworms were used as experimental models decades …
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