. Fundamentals of botany. Botany. 440 STEUCTUBE AND LIFE HISTORIES its nucleus undergoing divisions, forming, in succession, a two-celled, four-celled, and eight-celled embryo-sac (Figs. 325 and 326). Three of these cells pass to one end of the sac, opposite the micropyle, and are known /'â 0 Fig. 326.âAt the left, diagram of the anatomy of an angiospermous flower shortly after pollination; anth., anther; fil., filament; St., stamen; stig., stigma; , pollen grains germinating; sty., style; pt., pollen tube; , ovary wall; o., ovule,, containing embryo-sac; pet., petal; sep., sepa
. Fundamentals of botany. Botany. 440 STEUCTUBE AND LIFE HISTORIES its nucleus undergoing divisions, forming, in succession, a two-celled, four-celled, and eight-celled embryo-sac (Figs. 325 and 326). Three of these cells pass to one end of the sac, opposite the micropyle, and are known /'â 0 Fig. 326.âAt the left, diagram of the anatomy of an angiospermous flower shortly after pollination; anth., anther; fil., filament; St., stamen; stig., stigma; , pollen grains germinating; sty., style; pt., pollen tube; , ovary wall; o., ovule,, containing embryo-sac; pet., petal; sep., sepal. 1-8, Stages in the development of the female gametophyte (embryo-sac); , megaspore-mother-cell; , inner integument; , outer integu- ment; }un., funiculus; chat., chalaza; nii., nucellus (megasporangium); emb., embryo-sac. All diagrammatic. as the antipodal cells, or antipodals, while two of them meet in the center and fuse, forming the endosperm-nucleus. The remaining three pass to the end near the micropyle, where one of them becomes organized as the egg-cell; the others are called synergids (helpers) (Cf. Fig. 326).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gager, C. Stuart (Charles Stuart), 1872-1943. Philadelphia, P. Blakiston's son & co.
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Keywords: ., bookauthorgag, bookcentury1900, bookdecade1910, booksubjectbotany
