Sentence Examples


  • - As is the case with the Oligochaeta, the Polychaeta furnish examples of species which multiply asexually by budding.
  • This genus also propagates asexually, like Ctenodrilus, which may possibly belong to the same family.
  • The Coccidae can, and mainly do, breed asexually (parthenogenetically).
  • This fact gave rise in ancient times to the false idea that the tapeworm originated from the union of these segments; and in modern times it has led to the view that the tapeworm is not a segmented organism (the monozoic view), but is a colony composed of the scolex which arises from the embryo and of the proglottides, which are asexually produced buds that, upon or before attaining their full size and maturity, become separated, grow, and, in some cases, live freely for a time, just as the segments of a strobilating jelly-fish grow, separate and become sexual individuals (the polyzoic view).
  • One view, the monozoic, regards the whole development as a prolonged metamorphosis; another, the polyzoic view, considers that not only is the Cestode a colony, the proglottides being produced asexually, but that the scolex which buds off these individuals is itself a bud produced by the spherical embryo or onchosphere.

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