. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 54 THE PLANT: A GENERAL EXTERNAL VIEW. under surface of the leaf are many stomates. (The Greek word stoma means mouth.) A stomate is an opening in the skin of a leaf. It is so small that it requires a microscope to see it; there may be thousands of stomates on a single leaf. (See Figure 8.) Gases pass in and out through the stomates. The upper angle between the base of the petiole and the stem is the axil. If there is no petiole, the Fio. 8. — A little of
. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. 54 THE PLANT: A GENERAL EXTERNAL VIEW. under surface of the leaf are many stomates. (The Greek word stoma means mouth.) A stomate is an opening in the skin of a leaf. It is so small that it requires a microscope to see it; there may be thousands of stomates on a single leaf. (See Figure 8.) Gases pass in and out through the stomates. The upper angle between the base of the petiole and the stem is the axil. If there is no petiole, the Fio. 8. — A little of the under , , i i r surface of the leaf of Cokus, uPPer angle between the base of very highly magnified. Two the blade and the stem is the stomates appear. ^j R jg ^ ^ a^& q[ ^^ that buds regularly arise. Buds develop into branches, either flower bearing or leaf bearing or both. Now you know very well that more light falls on the leaves than on any other part of the plant; the leaves seem to seek the light. (See Figures g and io.) So it does not surprise you to find that the leaf is the part of the plant in which photo- synthesis principally occurs. Up to it, through the veins, come those materials from the soil which it uses in this work. Into it, through the stomates, come those substances of the air which Fig. 9. — A nasturtium with light corn- are necessary. Down to it, ing to it from 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 Coulter, John G. (John Gaylord), b. 1876. New York, American Book Co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
