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platyhelminthes    
扁形动物

扁形动物


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  • Flatworm - Wikipedia
    Platyhelminthes (from Ancient Greek πλατύ platy 'flat' and ἕλμινς helmins 'parasitic worm') [4] is a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates commonly called flatworms or flat worms
  • Flatworm | Reproduction, Examples, Characteristics | Britannica
    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
  • Introduction to the Platyhelminthes
    Platyhelminths have practically no fossil record A few trace fossils have been reported that were probably made by platyhelminths (Alessandrello et al , 1988), and fossil trematode eggs have been found in Egyptian mummies and in the dried dung of Pleistocene ground sloth
  • Phylum Platyhelminthes- characteristics, classification, examples
    Platyhelminthes definition Platyhelminthes characteristics and Classification Class 1- Turbellaria Class 2- Trematoda Class 3- Cestoda
  • 28. 3B: Phylum Platyhelminthes - Biology LibreTexts
    Phylum Platyhelminthes is composed of the flatworms: acoelomate organisms that include many free-living and parasitic forms Most of the flatworms are classified in the superphylum Lophotrochozoa, which also includes the mollusks and annelids
  • Platyhelminthes - Examples, Characteristics, Species, Habitat
    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
  • Platyhelminthes (flatworms) | INFORMATION | Animal Diversity Web
    Flatworms are unsegmented, bilaterally symmetrical worms that lack a coelom (acoelomate) but that do have three germ layers Some forms are free living but many are parasitic
  • Flatworms - Facts, Diet Habitat Information - Animal Corner
    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
  • Worms: Phyla Platyhelmintes, Nematoda, and Annelida
    The phylum Platyhelminthes consists of simple worm-like animals called flatworms (Fig 3 36) The name Platyhelminthes (pronounced “plat-ee-hel-MIN-theze”) is derived from the Greek root word platy meaning flat and the Greek root word helminth meaning worm
  • Platyhelminthes: Current Biology - Cell Press
    Often speculated in the classic literature to represent primitive basal bilaterians, modern molecular phylogenetic analyses place the Platyhelminthes within the Lophotrochozoa, a clade of invertebrate animals that includes annelids (segmented worms) and mollusks





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