Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 439
... diameter , and usually contain one type of reproductive cell only ; mixed colonies occur very rarely . The protoplasts of the somatic cells are rounded , with slight indications in surface view of angles where the protoplasmic ...
... diameter , and usually contain one type of reproductive cell only ; mixed colonies occur very rarely . The protoplasts of the somatic cells are rounded , with slight indications in surface view of angles where the protoplasmic ...
Page 440
... diameter of 243 μ were seen ; the largest number of daughters per coenobium observed was 11 . Platelets , always of 32 spermatozoids , measured 20 μ ; oospores ( up to 11 per colony ) from 65 to 84 u in diameter . B. Volvox africanus ...
... diameter of 243 μ were seen ; the largest number of daughters per coenobium observed was 11 . Platelets , always of 32 spermatozoids , measured 20 μ ; oospores ( up to 11 per colony ) from 65 to 84 u in diameter . B. Volvox africanus ...
Page 532
... diameter of over 2 mm . , though this is exceptional . In a typical healthy , well - grown strain , however , the mature asexual colonies are mostly over 1.5 mm . in equatorial diameter . The sexual colonies are in general smaller than ...
... diameter of over 2 mm . , though this is exceptional . In a typical healthy , well - grown strain , however , the mature asexual colonies are mostly over 1.5 mm . in equatorial diameter . The sexual colonies are in general smaller than ...
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