Students' handbook to accompany Plants and their uses . Fi<;. 37. Beef wood, C<i*iHii-hi«. an Austra-lian switch plant destitute of foliage leavesand depending on the chlorophyll-containingcells of the bark for photosynthesis Photograph by Robert Cameron 55. Work of the leafyshoot. How plant foodis made from raw mate-rials has been briefly ex-plained in Chapter almost all of thehigher plants this foodmaking is carried onby the cooperation ofthe stem and the together, theyare known as the shoot,so that the parts of aflowering plant (beforeit begins to flower) areroot and
Students' handbook to accompany Plants and their uses . Fi<;. 37. Beef wood, C<i*iHii-hi«. an Austra-lian switch plant destitute of foliage leavesand depending on the chlorophyll-containingcells of the bark for photosynthesis Photograph by Robert Cameron 55. Work of the leafyshoot. How plant foodis made from raw mate-rials has been briefly ex-plained in Chapter almost all of thehigher plants this foodmaking is carried onby the cooperation ofthe stem and the together, theyare known as the shoot,so that the parts of aflowering plant (beforeit begins to flower) areroot and shoot. 56. Photosynthesis inthe stem. Among seedplants in general it isthe leaves that do byfar the greater part ofthe work of photosyn-thesis, but some plants,as the cacti (fig. 66),are practically leafless1 i That is, they have noleaves which can do anyfood-making or which at allresemble ordinary JULIUS SACHS Julius Sachs, a noted German botanist (b. Breslau, 1832; d. Wtirzburg, 1897), wasa most careful observer of the ways in which plants live and work. He had a re-markably clear and forceful style of writing and an unusual ability in makingillustrations. As investigator, writer, and teacher he organized the somewhatdisconnected discoveries of others and, adding his own discoveries, establishedthe science of plant physiology. His textbooks were unsurpassed in influence andgave to many students their first general view of botany. He published manyimportant contributions to our knowledge of germination, the work of chlorophyll,and other processes of food-Hl^king aud food transportation THE STEM AND THE LEAF 57 all the year round, and in these photosynthesis is carried onby the green layer of the cortex beneath the epidermis ofthe stem. In many drycountries thereare switch plants,which either beara few little leavesduring a smallpart of the yearor are entirelyleafless, as isshow
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Keywords: ., bookcentury1900, bookcollection, bookdecade191, booksubjectbotany
