. Botany for high schools. Botany. THE GYMNOSPERMS spread apart. They thus catch the flying pollen, which falls down to the base of the scales and is caught in a drop of a viscid substance exuded through the micropyle of the ovule. When this dries it draws the pollen grains up in the micropyle close against the nucellus. The scales now close, and the cone turns downward, in which position the ovules are better pro-. Fig- 353- Section of ovule of white pine, int., integu- ment, pc, pollen chamber; pt, pollen tube; », nucleus; m, macrospore Please note that these images are extracted fr
. Botany for high schools. Botany. THE GYMNOSPERMS spread apart. They thus catch the flying pollen, which falls down to the base of the scales and is caught in a drop of a viscid substance exuded through the micropyle of the ovule. When this dries it draws the pollen grains up in the micropyle close against the nucellus. The scales now close, and the cone turns downward, in which position the ovules are better pro-. Fig- 353- Section of ovule of white pine, int., integu- ment, pc, pollen chamber; pt, pollen tube; », nucleus; m, macrospore 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 Atkinson, George Francis, 1854-1918. New York, H. Holt and Company
Size: 1195px × 2090px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1910
