Annals of the South African Museum, Volume 16The Museum, 1933 - Natural history |
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Page 445
... vacuoles with a periodicity of from 15 to 30 seconds , more or less , occur in the angles of the base of the protoplast near the connecting strands , and probably one or two smaller vacuoles are situated in the colourless throat of the ...
... vacuoles with a periodicity of from 15 to 30 seconds , more or less , occur in the angles of the base of the protoplast near the connecting strands , and probably one or two smaller vacuoles are situated in the colourless throat of the ...
Page 551
... vacuoles may be seen in addition ( fig . 1 , A , D ) . These are not to be confused with the contractile vacuoles , from which they are quite distinct . Their content has not been tested , but they are probably similar to the vacuoles ...
... vacuoles may be seen in addition ( fig . 1 , A , D ) . These are not to be confused with the contractile vacuoles , from which they are quite distinct . Their content has not been tested , but they are probably similar to the vacuoles ...
Page 603
... vacuoles , others in the basal part may sometimes be seen , but such vacuoles in a healthy oosphere are comparatively small and rare ; much vacuolation is usually a pathological sign . In surface view the oosphere is circular and about ...
... vacuoles , others in the basal part may sometimes be seen , but such vacuoles in a healthy oosphere are comparatively small and rare ; much vacuolation is usually a pathological sign . In surface view the oosphere is circular and about ...
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