. A civic biology : presented in problems. Biology; Sanitation. Two stages in an experiment to show that green plants grow toward the light. air. This growth of the stem to the light is of very great impor- tance to a growing plant, because, as we shall see later, food mak- ing depends largely on the amount of sunlight the leaves receive. Effect of Light on Leaf Arrangement. - - It is a matter of common knowledge that green leaves turn toward the light. Place grow- ing pea seedlings, oxalis, or any other plants of rapid growth near a window which receives full sunlight. Within a short time the
. A civic biology : presented in problems. Biology; Sanitation. Two stages in an experiment to show that green plants grow toward the light. air. This growth of the stem to the light is of very great impor- tance to a growing plant, because, as we shall see later, food mak- ing depends largely on the amount of sunlight the leaves receive. Effect of Light on Leaf Arrangement. - - It is a matter of common knowledge that green leaves turn toward the light. Place grow- ing pea seedlings, oxalis, or any other plants of rapid growth near a window which receives full sunlight. Within a short time the leaves are found to be in positions to receive the most sunlight possible. Careful observation of any plant growing outdoors shows us that in almost every case the leaves are so disposed as to get much sunlight. The ivy climbing up the wall, the morning- glory, the dandelion, and the burdock all show different arrange- ments of leaves, each presenting a large surface to the light. Leaves are often definitely arranged, fitting in between one. 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 Hunter, George W. (George William), 1873-1948. New York : American Book Company
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