Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 545
... cell regarded as a regular hexagon ; result , the number of cells in the coenobium . Obviously this method is only very approximately correct ; the diameter of a cell and that of the spheroid are quantities of a different order of ...
... cell regarded as a regular hexagon ; result , the number of cells in the coenobium . Obviously this method is only very approximately correct ; the diameter of a cell and that of the spheroid are quantities of a different order of ...
Page 546
... cells per colony . Even allowing a large margin of error in counting the cells , these numbers scarcely . cover all observed variations . Irregularities in division , e.g. a number of cells at one stage or another undergoing an extra ...
... cells per colony . Even allowing a large margin of error in counting the cells , these numbers scarcely . cover all observed variations . Irregularities in division , e.g. a number of cells at one stage or another undergoing an extra ...
Page 561
... cells are differentiated before inver- sion or immediately subsequent thereto . In a few cases inverting daughters showed cells rather larger than the majority , but in most cases no difference between the component cells could be ...
... cells are differentiated before inver- sion or immediately subsequent thereto . In a few cases inverting daughters showed cells rather larger than the majority , but in most cases no difference between the component cells could be ...
Contents
Observations on the Genus Volvox in Africa By FLORENCE RICH | 429 |
Introduction | 439 |
Volvox Rousseletii G S West | 450 |
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Common terms and phrases
Africa algae antheridium antheridium mother-cells appear asexual colonies aureus Cape Flats capensis cell-division chloroplast cilia coenobia coenobium collected complete connecting strands containing culture daughter colonies diameter dioecious division elongated embryo embryo colonies endospore enlargement equatorial escape Eudorina eyespot female colonies gelatinous germination globator gonidia gonidium hollow inversion Juveniles Kimberley Kuschakewitsch large number latter Linyanti Linyanti River living material lobes M. A. P. Neill male colonies methylene blue monoecious N'gamo nucleolus nucleus number of cells number of daughter observations occasionally oospheres oospores phase phialopore phytoplankton Plate XVIII pool pore posterior pole protoplasmic connections protoplast pyrenoid reproductive cells Rich and Pocock Rietfontein ripe oospores Rotifers rounded seen sexual colonies Shaw slightly smaller somatic cells species of Volvox sperm bundles sperm globoids spermatozoids spherical spines spore stained surface view usually vacuoles vesicle vleis Volvox africanus Volvox gigas Volvox Rousseletii wall young colony