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Monitoring the activity of a living organism.

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Monitoring the activity of a living organism. Aim: To monitor the activity of a living organism in different colors of lights and different conditions. Prediction: My prediction is that the white light would help the plant photosynthesize better so the plant will grow better than the green and the red. This is because white light has all the natural colors (blue, red, orange, yellow, green, indigo, and violet). My prediction for the red light is that it will not perform as well as the white light, the red plant will grow well because, it absorbs red and violet. So the plant might grow well. The one in green will not grow good, I think this because plants reflect green light so the plant will not grow that well. Background information. Photosynthesis occurs only in the presence of light, and takes place in the chloroplasts of green plant cells. Photosynthesis can be defined as the production of simple sugars from carbon dioxide and water causing the release of sugar and oxygen. The chemical equation for photosynthesis can be expressed as: (light) 6CO2 + 6H2O = C6H12O6 + 6O2 (in the presence of chlorophyll) The fact that all plants need light in order to photosynthesize has been proven many times in experiments, and so it is possible to say that without light, the plant would die. ...read more.


Bad B None 0 None DEAD C 50g 1 Yellow 7.8 Bad D 50g 2 Yellow 6.7 Bad Day 6 50g A 50g 1 Yellow 1.2 Bad B None 0 None DEAD C 50g 1 Yellow 7.9 Bad D 50g 2 Yellow 6.7 Bad Day7 A 50g 1 Yellow 1.2 Bad B None 0 None DEAD C 50g 1 Yellow 7.9 Bad D 50g 2 Yellow 6.7 Bad Day8 A 50g 1 Yellow 1.2 Bad B None 0 None DEAD C 50g 1 Yellow 7.9 Bad D 50g 1 Brown 6.7 Bad Day9 A None 0 None 0 DEAD B None 0 None DEAD C None 0 None 0 DEAD D None 0 None 0 DEAD The brassica rapa plant lasted 8 days with the red light. I thought it would of done better because ''Certain red and blue wavelengths of light are the most effective in photosynthesis because they have exactly the right amount of energy to energize, or excite, chlorophyll electrons and boost them out of their orbits to a higher energy level. Other pigments, called accessory pigments, enhance the light-absorption capacity of the leaf by capturing a broader spectrum of blue and red wavelengths, along with yellow and orange wavelengths. None of the photosynthetic pigments absorb green light; as a result, green wavelengths are reflected, which is why plants appear green.'' ...read more.


Also give it lots of space so its roots can grow. It also needs lots of nutrition and fertilizer to be healthy. Improvements : The improvement I would make in this experiment will be that I will try to measure it over the weekend so the plants get water every day. The second will be to use different amounts of water to see if that affects growth or life span of the plant. Evaluation: The experiment was very fair because every thing was measured even the water was measured A different method I would use is to change the length of time it is in light, and will try different lengths of time in light to see if that affects the growth of the plant. I will also try to give the plant more carbon dioxide during the time the lights are on so it can produces photosynthesis more. Any error's: Industry improving plant productivity: One answer for further increasing productivity is to improve crop varieties by ''selective breeding,'' and aided by genetic engineering. To achieve and produce plants that grow faster, look and taste better and are more resistant to stress and disease. First the breeders select the best individual plants. Secondly they cross breed individuals containing at least some of the characters thought desirable, hoping to produce offspring that combine these characters. By William Docherty This unit is fine- go ahead and print it. ...read more.

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