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How Light Affects Photosynthesis

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How Light Affects Photosynthesis
Light Lab Report

Introduction: Without light, plants would not be able to carry out photosynthesis (McKenney, Peffley, and Wilmington 49). Photosynthesis is responsible for providing the plant with nutrients it needs to thrive and grow. Without the proper nutrients, it is difficult for a plant to continue to live. Therefore, photosynthesis is necessary for a plant’s vitality. The goal of this experiment is to observe and identify the impact that light has on a plant. Hypothesis: If light affects photosynthesis in plants, then the plants growing under the high light environment is expected to grow more than the plants in the medium and no light environments. Materials and Methods: In this lab, the plants that were tested were the Mother of Thousands, the Vicks plant, and the Purple Heart Vine. Each species of plant was kept in a high light environment, medium light environment, and a no light environment. The plants were observed before and after they were placed in their designated light environment. The observations taken included the rating of plant appearance and leaf color on a one-to-ten-point scale, measurements of leaf diameter in internode length (both measured in centimeters), and the observation
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The Vick plants’ leaf color score was rated higher in the conclusion in the high light environments (8.5/10 to 9/10); but received a lower rating when placed in the medium and no light environments. The Vick plant’s leaf diameter increased when placed in high light (from 3 cm to 4 cm), and remained the same in medium light (3 cm), but decreased when placed in the no light environment (3 cm to 2.5 cm). When placed in all three environments, the internode length of the Vicks plant decreased by roughly half a centimeter in all

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