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The Effect of Absorption Rate on Light and Dark Colored Leaves Essays

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The Effect of Absorption Rate on Light and Dark Colored Leaves. A particular leaf color may have an effect on the leaf’s absorption rate. An experiment was conducted to determine the relationship between a leaf’s absorption rate and color. A group of students tested spinach, cabbage, and no chloroplast solutions to determine the relationship it has with the absorption rate. It was found that darker colored leaves have a higher absorption rate than lighter colored leaves when analyzed from the graphs. This is highlighted by noting that the lighter colored leaves remained constant during the majority of the experiment. It was concluded that a leaf’s pigment can affect the amount of light energy being absorbed in different wavelengths.
In this lab, different leaves will be tested to determine if the absorption peaks will be affected by the multiple colors of leaves from using a chlorophyll extract. It is known that all plants consist of chlorophyll. Chlorophyll is a green photosynthetic pigment that absorbs sunlight (ScienceDaily, n.d.). Also, chlorophyll is essential in a process known as photosynthesis that takes place in plants and other organisms (HowStuffWorks, 2008). Photosynthesis synthesizes carbohydrates known as sugars by utilizing the light energy absorbed by plant or other organisms’, and carbon dioxide and water.
Chlorophyll obtains its green pigmentation from absorbing certain colors of light on the spectrophotometer. A spectrophotometer is an instrument that is used to measure the light energy that is absorbed at different wavelengths (Spectrophotometer, n.d.). The wavelength absorbed by chlorophyll is about four hundred nanometers and seven hundred nanometers. Chlorophyll reflects green pigments because it mostly ab...


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...www.ehow.com/facts_7548728_chlorophyll-found-plant-cells.html
Chlorophyll. (n.d.). ScienceDaily. Retrieved April 27, 2014, from http://www.sciencedaily.com/articles/c/chlorophyll.htm
Chlorophyll. (2008, October 29). HowStuffWorks. Retrieved April 27, 2014, from http://science.howstuffworks.com/dictionary/plant-terms/chlorophyll-info.htm
Cook, B. (n.d.). How a Tree Grows by Brent Cook. How A Tree Grows. Retrieved April 27, 2014, from http://dendro.cnre.vt.edu/forsite/2004presentations/brent/lightleavesautumncolors.htm
Photosynthesis: Chlorophyll. (n.d.). Photosynthesis: Chlorophyll. Retrieved April 27, 2014, from http://www.phschool.com/science/biology_place/biocoach/photosynth/chlorophyll.html
SPECTROPHOTOMETER USE. (n.d.). Spectrophotometer Use. Retrieved April 27, 2014, from http://biology.clc.uc.edu/fankhauser/labs/microbiology/Growth_Curve/Spectrophotometer.htm



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