. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. STEMS 51 usually the principal green parts of plants. In them food is made. Some stems, however, are also green, and in them too food is made. Perhaps you have noticed how very green some young stems are. Under the thin bark there is sometimes a layer which is quite as green as the leaves themselves. In this green layer of stems photo- synthesis occurs just as it does in green leaves. Thus we find that stems sometimes do the ordinary work of leaves. You re
. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. STEMS 51 usually the principal green parts of plants. In them food is made. Some stems, however, are also green, and in them too food is made. Perhaps you have noticed how very green some young stems are. Under the thin bark there is sometimes a layer which is quite as green as the leaves themselves. In this green layer of stems photo- synthesis occurs just as it does in green leaves. Thus we find that stems sometimes do the ordinary work of leaves. You re- call that we found they also sometimes do the or- dinary work of roots. There are some green plants which have no food- making leaves at all, and such plants perform all of their photosynthesis in the stems. Cactuses are the best known plants of this kind. Perhaps you have seen them under cul- tivation. They are com- monly found in conservatories where they are cultivated on account of their strange forms and on account of the beautiful flowers which they produce at long intervals. It is in deserts that cactuses are found growing wild in greatest abundance. Their fleshy, water-containing bodies permit them to live where other plants would perish. (See Figure 6.). Fig. 6. —The giant cactus. These leafless stems are green and contain a great deal of 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
