Many plants, such as Spinacia oleracea (Spinach) uses a process called Photosynthesis and Respiration to produce glucose and oxygen (O2). During photosynthesis, light, carbon dioxide (CO2) and water (H2O) are required to begin the process. Light is absorbed by the plant’s chlorophyll, while CO2 is absorbed through the stomata and H2O is absorbed by the cells of the root hairs. The equation for photosynthesis is 6CO2 + 6H2O C6H12O6 (Glucose). Plants are able to absorb all colors of the visible light spectrum with the exception of green as plants reflect the color. After light is absorbed by the chlorophyll, electrons become excited and water molecules are split through a process called photolysis and releases an oxygen molecule. The excited
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The 7-watt light had a higher intensity and therefore will have more energy and able to excite more electrons in the chlorophylls. The independent variables were the intensities of the light, while the dependent were the rate of O2 and CO2 production and consumption. The control variables were the spinach leaves, equipment, the calibration of time and data collecting as well as the BioChambers used. During experiment 2, the rate of oxygen production will be higher when the spinach leaves are placed in on a 7-watt light because it produces more energy that will be able to excite more electrons thus produce more …show more content…
According to my results after conducting the experiments, the white light had the highest rate of O2 production than the other light treatments because White light contains all wavelengths of the visible light spectrum and are able to be absorbed by the chlorophylls. The green light had almost identical rate of O2 production as the dark. This is due to plants absorbing all wavelengths but reflecting the green wavelength. According to Hubbard and Gallio (2012), once light is shine onto pigments, electrons are excited by the photons, moving the electrons from low energy to high energy. As the spinach leaves are exposed to the white light, the pigments could absorb the photons and excite the electrons to move from low to high energy levels. The rate of CO2 production began to decrease when the spinach leaves were exposed to the white light because 6CO2 and H2O are used to process Photosynthesis. Potential errors could be the timing of calibration for each trial as well as loose gas sensors. CO2 or O2 may escape the BioChamber if the gas sensors were loose and result in inaccurate data. Other errors include alternate light sources emitting from the room and leftover CO2 and O2 from previous experiment. When the spinach leaves are placed on the white light, the leaves could’ve also been exposed to different
The 7-watt light had a higher intensity and therefore will have more energy and able to excite more electrons in the chlorophylls. The independent variables were the intensities of the light, while the dependent were the rate of O2 and CO2 production and consumption. The control variables were the spinach leaves, equipment, the calibration of time and data collecting as well as the BioChambers used. During experiment 2, the rate of oxygen production will be higher when the spinach leaves are placed in on a 7-watt light because it produces more energy that will be able to excite more electrons thus produce more …show more content…
According to my results after conducting the experiments, the white light had the highest rate of O2 production than the other light treatments because White light contains all wavelengths of the visible light spectrum and are able to be absorbed by the chlorophylls. The green light had almost identical rate of O2 production as the dark. This is due to plants absorbing all wavelengths but reflecting the green wavelength. According to Hubbard and Gallio (2012), once light is shine onto pigments, electrons are excited by the photons, moving the electrons from low energy to high energy. As the spinach leaves are exposed to the white light, the pigments could absorb the photons and excite the electrons to move from low to high energy levels. The rate of CO2 production began to decrease when the spinach leaves were exposed to the white light because 6CO2 and H2O are used to process Photosynthesis. Potential errors could be the timing of calibration for each trial as well as loose gas sensors. CO2 or O2 may escape the BioChamber if the gas sensors were loose and result in inaccurate data. Other errors include alternate light sources emitting from the room and leftover CO2 and O2 from previous experiment. When the spinach leaves are placed on the white light, the leaves could’ve also been exposed to different