. Fecundation in plants. Plant embryology; Plants, Sex in; Karyokinesis. SPH^ROPLEA. 8l in the two varieties, as will be shown, the cleavage is not the same. In var. braunii the ring-like disposition of the protoplasm disappears, while large vacuoles appear, transforming the entire cell-contents into a foamy structure in which larger and smaller strands and masses alternate (Fig. 27, B). In the dense'portions of protoplasm nuclei, as well as chromatophores and pyrenoids, are irregularly disposed. Now a cleavage takes place by which the plasmic contents are segmented into irregular protoplasts


. Fecundation in plants. Plant embryology; Plants, Sex in; Karyokinesis. SPH^ROPLEA. 8l in the two varieties, as will be shown, the cleavage is not the same. In var. braunii the ring-like disposition of the protoplasm disappears, while large vacuoles appear, transforming the entire cell-contents into a foamy structure in which larger and smaller strands and masses alternate (Fig. 27, B). In the dense'portions of protoplasm nuclei, as well as chromatophores and pyrenoids, are irregularly disposed. Now a cleavage takes place by which the plasmic contents are segmented into irregular protoplasts of varying sizes (Fig. 27, C). These proto- plasts contract (the large vacuoles thereby gradually disappearing) and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Mottier, David Myers. [Washington] The Carnegie Institution of Washington


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