Flatworm - Wikipedia
The 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.
Phylum Platyhelminthes- Characteristics, Classification and …
Platyhelminthes have the following important characteristics: They are triploblastic, acoelomate, and bilaterally symmetrical. They may be free-living or parasites. The body has a soft covering with or without cilia. Their body is dorsoventrally flattened without …
Flatworm | Reproduction, Examples, & Characteristics | Britannica
Nov 15, 2024 · 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.
Phylum Platyhelminthes - Characteristics, Classification, …
Mar 20, 2024 · Phylum Platyhelminthes, also known as flatworms, comprises bilaterally symmetrical, triploblastic, dorsoventrally flattened invertebrates lacking circulatory, respiratory, and skeletal systems, characterized by a simple digestive system with a single opening and a protonephridial excretory system.
Phylum Platyhelminthes- characteristics, classification, examples
Aug 3, 2023 · Phylum Platyhelminthes (flatworms) characteristics They are free-living, commensal or parasitic. They are bilaterally symmetrical and dorsoventrally flattened, triploblastic worm.
28.3B: Phylum Platyhelminthes - Biology LibreTexts
Nov 23, 2024 · Platyhelminthes are divided into four classes: Turbellaria, free-living marine species; Monogenea, ectoparasites of fish; Trematoda, internal parasites of humans and other species; and Cestoda (tapeworms), which are internal parasites of many vertebrates.
10.2: Phylum Platyhelminthes - Biology LibreTexts
The Platyhelminthes consist of two monophyletic lineages: the Catenulida and the Rhabditophora. The Catenulida, or "chain worms," is a small clade of just over 100 species. These worms typically reproduce asexually by budding.
14.1: Phylum Platyhelminthes - Biology LibreTexts
Jul 31, 2022 · The Platyhelminthes consist of two lineages: the Catenulida and the Rhabditophora. The Catenulida, or “chain worms” is a small clade of just over 100 species. These worms typically reproduce asexually by budding.
Flatworms - Phylum Platyhelminthes - Classification/Characteristics
Flatworms (Platyhelminthes) are a group of bilaterally symmetrical, acoelomate, soft-bodied invertebrate animals found in marine, freshwater as well as moist terrestrial environments.
Platyhelminthes - Examples, Characteristics, Species, Habitat
Sep 18, 2024 · Platyhelminthes, or flatworms, are a phylum of simple, bilaterally symmetrical invertebrates with a dorsoventrally flattened body. They lack specialized respiratory and circulatory systems and include both free-living species, like planarians, and parasitic species, such as tapeworms and flukes.