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Platyhelminthes (from the Greek πλατύ, platy, meaning "flat" and ἕλμινς (root: ἑλμινθ-), helminth-, meaning "worm") [4] is a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates commonly called flatworms or flat worms.
Download as PDF; Printable version; ... Platyhelminthes: Order: ... All species of Dugesiidae live in freshwater environments and have a dorsoventrally flattened body ...
Print/export Download as PDF; Printable version; ... Pages in category "Platyhelminthes families" The following 82 pages are in this category, out of 82 total. ...
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Tegument / ˈ t ɛ ɡ j ʊ m ə n t / is a term in helminthology for the outer body covering of members of the phylum Platyhelminthes. The name is derived from a Latin word tegumentum or tegere, meaning "to cover". [1] [2] It is characteristic of flatworms including the broad groups of tapeworms and flukes.
Monogenea are Platyhelminthes, so are among the lowest invertebrates to possess three embryonic germ layers—endoderm, mesoderm, and ectoderm. In addition, they have a head region that contains concentrated sense organs and nervous tissue (brain). Like all ectoparasites, monogeneans have well-developed attachment structures.
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Digeneans possess a vermiform, unsegmented body-plan and have a solid parenchyma with no body cavity as in all platyhelminths. Anterior sucker of Overstreetia cribbi a zoogonid digenean [ 1 ] There are typically two suckers , an anterior oral sucker surrounding the mouth , and a ventral sucker sometimes termed the acetabulum , on the ventral ...