Sentence Examples


  • The Bryophyta and Pteridophyta have sprung from the higher Thallophyta, and together form the larger group Archegoniatae, so-called from the form of the organ (archegonium) in which the egg-cell is developed.
  • The Mosses and Liverworts include forms with a more or less leaf-like thallus, such as many of the liverworts, and forms in which the plant shows a differentiation into a stem bearing remarkably simple leaves, as in the true mosses.
  • For instance, all the leaves of the Bryophyta are generally homologous inasmuch as they are all developments of the gametophyte.
  • Thus in the series Bryophyta, Pteridophyta, Phanerogamia, whilst the sporophyte presents progressive development, the gametophyte presents continuous reduction.
  • In illustration of the indirect response, the evolution of the Bryophyta and of more highly organized plants may be briefly considered.