flatworm — /flat werrm /, n. any worm of the phylum Platyhelminthes, having bilateral symmetry and a soft, solid, usually flattened body, including the planarians, tapeworms, and trematodes; platyhelminth. [1895 1900; FLAT1 + WORM] * * * or platyhelminth… … Universalium
reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… … Universalium
Flatworm — Taxobox name = Platyhelminthes image width = 240px image caption = Bedford s flatworm, Pseudobiceros bedfordi regnum = Animalia subregnum = Eumetazoa Body Plan = Bilateria superphylum = Platyzoa phylum = Platyhelminthes phylum authority =… … Wikipedia
Marina Beach — Coordinates: 13°03′15″N 80°17′01″E / 13.05418°N 80.28368°E / 13.05418; 80.28368 … Wikipedia
Peter Ax — est un biologiste, spécialisé dans l étude des animaux multicellulaires. Publications Auteur The phylogenetic system: The systematization of organisms on the basis of their phylogenesis, éd. Wiley Sons, Chichester (1987) Systematik in der… … Wikipédia en Français
flatworms — Platyelminthes Plat y*el*min thes, n. pl. [NL. See {Platy }, and {Helminthes}.] (Zo[ o]l.) A class of helminthes including the cestodes, or tapeworms, the trematodes, and the turbellarians. Called also {flatworms}. [1913 Webster] … The Collaborative International Dictionary of English
Platyelminthes — Plat y*el*min thes, n. pl. [NL. See {Platy }, and {Helminthes}.] (Zo[ o]l.) A class of helminthes including the cestodes, or tapeworms, the trematodes, and the turbellarians. Called also {flatworms}. [1913 Webster] … The Collaborative International Dictionary of English
Vitellogene — Vi*tel lo*gene, n. [See {Vitellus}, and { gen}.] (Zo[ o]l.) A gland secreting the yolk of the eggs in trematodes, turbellarians, and some other helminths. [1913 Webster] … The Collaborative International Dictionary of English
yelk — Yolk Yolk (y[=o]lk or y[=o]k; 277), n. [OE. yolke, yelke, [yogh]olke, [yogh]elke, AS. geoloca, geoleca, fr. geolu yellow. See {Yellow}.] [Written also {yelk}.] [1913 Webster] 1. The yellow part of an egg; the vitellus. [1913 Webster] 2. (Zo[… … The Collaborative International Dictionary of English
Yolk — (y[=o]lk or y[=o]k; 277), n. [OE. yolke, yelke, [yogh]olke, [yogh]elke, AS. geoloca, geoleca, fr. geolu yellow. See {Yellow}.] [Written also {yelk}.] [1913 Webster] 1. The yellow part of an egg; the vitellus. [1913 Webster] 2. (Zo[ o]l.) An oily… … The Collaborative International Dictionary of English
