. Plants and their uses; an introduction to botany . late gametes (g) which resemble somewhatthe swarm-spores of Laminaria. They are attracted in large num-bers to a female gamete, and, attaching themselves to its surface,often the sphere to revolve by the energetic movement of theirfiagella (e). Directly after fertihzation the oospore comes to rest andgerminates (/), attacliing itself to some rock bj^ projections whichform the begiimings of a pseudo-root, while the main part abovebecomes a meristem for the shoot. No swarm-spores are producedand there is no alternation of generations. 1
. Plants and their uses; an introduction to botany . late gametes (g) which resemble somewhatthe swarm-spores of Laminaria. They are attracted in large num-bers to a female gamete, and, attaching themselves to its surface,often the sphere to revolve by the energetic movement of theirfiagella (e). Directly after fertihzation the oospore comes to rest andgerminates (/), attacliing itself to some rock bj^ projections whichform the begiimings of a pseudo-root, while the main part abovebecomes a meristem for the shoot. No swarm-spores are producedand there is no alternation of generations. 176. The red algae (Class Rhodophyceae), the largestand one of the most highly developed groups of seaweeds,are characterized by the presence of a red pigment calledphycoerythrin,^ which very generally masks the chlorophyllcompletely. The carrageen already studied (page 112) belongsto this class. 1 Meris-tem < Gr. meristos, divisible. 2 Pa-raphy-ses < Gr. para, besides; physis, growth. Phyco-ery-thrin < Gr. enjthros, red. 488 LIFE-HISTORIES.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
