. Botany for high schools and colleges. Botany. 38 BOTANY. division. The triangular apical cells of the growing stems divide repeatedly in the manner shown in the diagram (Fig. 27). Here the cell ABC, bounded by the heavy black. m Fig. ^.âDia^am to s^iow mode of fission of the apical cell, as seen from above. /, the cell A, B, 0, divided by the partition 1; II, the fame cell with a second par- tition, 2 ; III, the same cell with a tliird partition, 3. lines, is first'divided into two unequal portions by the parti- tion 1,1. ; next the larger portion of the divided cell is again divided by th^
. Botany for high schools and colleges. Botany. 38 BOTANY. division. The triangular apical cells of the growing stems divide repeatedly in the manner shown in the diagram (Fig. 27). Here the cell ABC, bounded by the heavy black. m Fig. ^.âDia^am to s^iow mode of fission of the apical cell, as seen from above. /, the cell A, B, 0, divided by the partition 1; II, the fame cell with a second par- tition, 2 ; III, the same cell with a tliird partition, 3. lines, is first'divided into two unequal portions by the parti- tion 1,1. ; next the larger portion of the divided cell is again divided by th^ partition 2, II. ; later, a third partition (3, III.) is formed, and so on. ^t is no- ticeable that in this case the partition always forms parallel to the oldest wall of the divid- ing cell. By continued growth the apical cell retains, despite its repeated divisions, its origi- nal dimensions. 50.âThe growing cells of the stem of the English bean (Vicia faha) furnish a good illustration of fission in the highest plants. In this case, and in many other, if not all, Dicotyledons, the division takes place directly .^' the stem through the Centrally placed of Viciafaba, in process oJ liRSKtn; in ^ â *â the cells a, a, the process is in its nucleUS (a. Fig. 28). After the earlier stage ; at d it is completed. X- . n t. 300.âAfter Pranti. formation of the new wall each new nucleus moves away and occupies a position on the opposite side of the cell from where it was formed (as at 0 and k).. 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 Bessey, Charles E. (Charles Edwin), 1845-1915. New York : H. Holt
Size: 2639px × 947px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1885
