Flatworm - Wikipedia
WebThe flatworms, flat worms, Platyhelminthes, or platyhelminths (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning "worm") [4] are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.
Flatworm | Reproduction, Examples, & Characteristics | Britannica
WebMar 22, 2024 · Flatworm, any of the phylum Platyhelminthes, a group of soft-bodied, usually much flattened invertebrates. Several species are free-living, but about 80 percent are parasitic. They are bilaterally symmetrical and lack specialized respiratory, skeletal, and circulatory systems; no body cavity (coelom) is present.
11.6: Flatworms - Biology LibreTexts
WebWould you believe that this gold-dotted creature is a flatworm? No? Well it is. There are more than 25,000 different types of flatworms, so they can be very different in how they appear. And many don't even look like your typical worm.
Habitats and types of flatworms | Britannica
Webflatworm, or platyhelminth, Any of a phylum (Platyhelminthes) of soft-bodied, usually much-flattened worms, including both free-living and parasitic species. Flatworms live in a variety of marine, freshwater, and terrestrial habitats worldwide.
Flatworm - Parasitic, Regeneration, Anatomy | Britannica
WebCestode larvae from several species can regenerate themselves from cut regions. A branched larval form of Sparganum prolifer, a human parasite, may undergo both asexual multiplication and regeneration. Flatworm - Parasitic, Regeneration, Anatomy: Most flatworms are hermaphroditic with complex reproductive systems.
15.3: Flatworms, Nematodes, and Arthropods - Biology LibreTexts
WebSep 23, 2021 · 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. Finally, the arthropods, one of the most successful taxonomic groups on the planet, are coelomate organisms with a hard exoskeleton and jointed appendages.
Flatworms - Facts, Diet & Habitat Information - Animal Corner
WebFlatworms 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.
What makes flatworms go to pieces - Nature
Web14 August 2019. What makes flatworms go to pieces. Flatworms called planarians can break off fragments of themselves that regenerate to form new, complete worms. The molecular cues that...
What Are Flatworms? - WorldAtlas
WebMay 18, 2018 · What Are Flatworms? 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 specialized circulatory and respiratory organs.
Flatworms | Earthworm Society of Britain
WebThe flatworms (phylum Platyhelminthes) are not segmented like earthworms (and indeed all members of the phylum Annelida) and have a flattened shape. This phylum includes the parasitic flukes (class Trematoda) and tapeworms (class Cestoda ), and the free-living flatworms (class Turbellaria ).
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