. Introduction to botany. Botany. 124 Introduction to Botany. Such movements are in harmony with the functions of the leaf, for the leaflets are spread out to receive the light necessary to photosynthesis in the daytime, and are folded together in the nighttime so that they are less apt to receive injury from too great radiation of heat or from the beating of storms. The variations in the turgidity of the motor organs are induced and regulated by the proto- plasts, which are influenced in their action by variations in. Fig. 6o. Motor organs (a, i, and c) of Scarlet Runner in their day position
. Introduction to botany. Botany. 124 Introduction to Botany. Such movements are in harmony with the functions of the leaf, for the leaflets are spread out to receive the light necessary to photosynthesis in the daytime, and are folded together in the nighttime so that they are less apt to receive injury from too great radiation of heat or from the beating of storms. The variations in the turgidity of the motor organs are induced and regulated by the proto- plasts, which are influenced in their action by variations in. Fig. 6o. Motor organs (a, i, and c) of Scarlet Runner in their day position at .4, and in their night position at B. C, a cross section of a petiole, and Z) of a motor organ. After Sachs. light intensity. Periodic movements induced by alterna- tions of day and night may be observed in the oxalises (commonly represented by the violet and yellow wood sorrel) and in many members of the pulse family. 97. The Sensitive Plant. — Movements of the leaves of some plants may be induced by contact with a solid body, by shaking the entire plant, by intense illumination, or by chemical stimulus, etc. The sensitive plant, ]\Iiinosapudica^. 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 Stevens, William Chase, 1861-. Boston, D. C. Heath & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1902
