Text-book of structural and physiological botany . nd then grow into a newAlga. They occur in both freshwater and marine Algae, Vaucheria, (Edogonium, &c. 4. By the formation of Oospores or Embryos from thecoalescence of the contents of two cells. The simplestvariety of this process is that known as C071 jligation^ inwhich no difference is perceptible between the fertiHsingand the fertilised cells (Fig. 54, p. 32, and Fig. z^z\ Thisoccurs in the Conjugatae and Diatomaceae. Less frequentlytwo swarmspores, one of which exceeds the other in sizemany times, coalesce, the product of their union bei
Text-book of structural and physiological botany . nd then grow into a newAlga. They occur in both freshwater and marine Algae, Vaucheria, (Edogonium, &c. 4. By the formation of Oospores or Embryos from thecoalescence of the contents of two cells. The simplestvariety of this process is that known as C071 jligation^ inwhich no difference is perceptible between the fertiHsingand the fertilised cells (Fig. 54, p. 32, and Fig. z^z\ Thisoccurs in the Conjugatae and Diatomaceae. Less frequentlytwo swarmspores, one of which exceeds the other in sizemany times, coalesce, the product of their union being a special Morphology and Classification. 25 r single reproductive cell, as in Pandorina and Ulothrix,This last form of conjugation constitutes a connecting linkbetween the modes of reproduction by swarmspores and byoospores. Those processes of impregnation are more com-plicated in which the two cells which share in the produc-tion of the embryo are unlike. The fertilising [male] bodyis in these cases termed a spermatozoid^ aittherozoid^ or.
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