This group, however, is itself composite; we may distinguish a collection of antithetic couplets (x.
In accordance with the prevalent antithetic view of the alternation of generations in these plants (see PLANTS, REPRODUCTION or), the forms distinguished as sporophyte and gametophyte are not homogenetic; consequently their leaves are not homologous, but are only functionally similar (homoplastic; see infra).
It came into my head as suggestively antithetic to the ' gnostic ' of Church history, who professed to know so much about the very things of which I was ignorant.
These two views are antithetic and no solution has been discovered.
The marked feature of Schleiermacher's thought in every department is the effort to combine and reconcile in the unity of a system the antithetic conceptions of other thinkers.
Although the antithetic theory is supported by many facts regarding the lifehistory and structure of the group of plants under consideration, it is quite possible that a stage in which the sporophyte was wholly dependent on the gametophyte may never have been passed through in their evolution.
A number of facts regarding the Algae, and also those relating to such deviations from the normal life cycle as apogamy or apospory, may be regarded as lending support to this view, which, in contrast to the theory of antithetic alternation, has been called that of homologous alternation.
Consciousness itself involves the union of the antithetic elements, and prior to moral action nature is found organized and reason manifested or symbolized therein.
For a discussion of this view, which regards the alternation of generations in Pteridophytes as antithetic and the two generations as not homologous with one another, reference may be made to the works of Celakovsky and Bower.