Elementary botany . Fig. 175-Portion of plant of Fucus show-ing conceptacles in enlarged ends;and below the vesicles (Fucusvesiculosus). Fig. of conceptacle of Fucus, sho\oogonia, and tufts of mg More slender and much-In these are developed oogonium, at maturity containing eight egg cells,branched threads bear narrowly oval antheridiaseveral two-ciliated spermatozoidp. 366. Fertilization,—At maturity the spermatozoids and egg cells float out-side of the oval cavities, where fertilization takes place. The spermatozojd. 170 MORPHOLOGY. sinks into the protoplasm of the egg


Elementary botany . Fig. 175-Portion of plant of Fucus show-ing conceptacles in enlarged ends;and below the vesicles (Fucusvesiculosus). Fig. of conceptacle of Fucus, sho\oogonia, and tufts of mg More slender and much-In these are developed oogonium, at maturity containing eight egg cells,branched threads bear narrowly oval antheridiaseveral two-ciliated spermatozoidp. 366. Fertilization,—At maturity the spermatozoids and egg cells float out-side of the oval cavities, where fertilization takes place. The spermatozojd. 170 MORPHOLOGY. sinks into the protoplasm of the egg cell, makes its way to the nucleus ofthe egg, and fuses with it as shown in fig. 181. The fertilized egg thengrows into a new plant. Nearly all the brown algae are Fig. of Fucus, onbranched threads. Fig. of Fucus withescaping spermatozoids. Fig. of Fucus surround-ed by spermatozoids.


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Keywords: ., bookauthoratk, bookcentury1900, bookdecade1900, booksubjectbotany