Flatworm - Wikipedia
网页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.
Flatworm | Reproduction, Examples, & Characteristics
网页2024年8月9日 · 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 and ...
网页Platyhelminthes are also known as flatworms, belonging to the kingdom Animalia. These are triploblastic, acoelomate, dorsoventrally flattened, and bilaterally symmetrical organisms, found as free-living, or in the body of a host.
28.3B: Phylum Platyhelminthes - Biology LibreTexts
网页2023年10月31日 · 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 …
Phylum Platyhelminthes - flatworms - SeaNet
网页Phylum Platyhelminthes - flatworms. Unsegmented worms with thin flat bodies. Majority of species are parasitic (flukes and tapeworms). Most free-living flatworms are small and inconspicuous, but a few local species are larger, often with striking markings.
Platyhelminthes: Current Biology - Cell Press
网页2017年4月3日 · Platyhelminthes (platy = flat and helminth = worm), or simply ‘flatworms’, are dorsoventrally flattened and bilaterally symmetrical worms (Figure 1A,B). Often speculated in the classic literature to represent primitive basal bilaterians, modern molecular phylogenetic analyses place the Platyhelminthes within the Lophotrochozoa, a clade of ...
14.1: Phylum Platyhelminthes - Biology LibreTexts
网页2022年7月31日 · 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.