. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. B FIG. 125.—.4, Antheridium containing sperm cells; B, archegonium containing an eggcell which has been found by five sperm cells. All from Osmunda cinnamomea. (AfterCampbell.) probably malic acid, diffusing through the water from its placeof secretion in the archegonium. The sperm cell now fuseswith the egg. Following this the fertilized egg cell begins aseries of nuclear and cell-divisions leading up to the full-grownfern (Fig. 124, E); and this produces sporangia and spores es
. Plant anatomy from the standpoint of the development and functions of the tissues, and handbook of micro-technic. B FIG. 125.—.4, Antheridium containing sperm cells; B, archegonium containing an eggcell which has been found by five sperm cells. All from Osmunda cinnamomea. (AfterCampbell.) probably malic acid, diffusing through the water from its placeof secretion in the archegonium. The sperm cell now fuseswith the egg. Following this the fertilized egg cell begins aseries of nuclear and cell-divisions leading up to the full-grownfern (Fig. 124, E); and this produces sporangia and spores essen-tially as already described for Aneimia. Because of its bearingspores the fern plant is called the sporophyte. Interpretation of Processes of Nuclear Division.—Theinterpretation that is now being put on the behavior of the nuclearsubstance during division as previously outlined is suggestednot only by what we see under the microscope but also by whatwe observe in carrying on pedigree cultures of hybrids, as willsoon appear. We can best lead up to the interpretation by INTERPRETATION OF PROCESSES OF NUC
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