Conclusion and Evaluation
Conclusion- The data supports my hypothesis. By looking at the graph titled “Average Rate of Photosynthesis” we see massive photosynthetic activity occurring from :30 to 10:00 with particularly impressive growth occurring in red and blue light around the 5:00 and 8:30 respectively. The colors that have the highest influence on photosynthesis is blue and red. This is also why so many gardeners both amateur and professional alike use blue and red lights to grown plants. Under red light, all discs floated before the tenth minute. This was also observed with blue light. The graph shows that green had the least successful photosynthetic rate, whereas red, blue and regular natural light had the most successful photosynthetic rate. Photosynthesis involves converting light energy in chemical energy through the use of photosynthetic pigments like chlorophyll. Light from the sun is comprised of different colors, sometimes referred to as wavelengths. My data matches research conducted by other scientists: chlorophyll absorbs red and blue light more than green. The green light is instead reflected making the leaves appear green. Green light experienced almost no photosynthesis throughout the entire experiment at any time. Almost no discs floated to the top at any point. Yellow, interestingly, was an outlier. I will discuss this further in the “Limitations of Experimental Design” section.
Limitations of Experimental Design- My experimental design helped answer the original question adequately. Since the syringes were small, wrapping them in colored film was relatively simple and took little time to do. Using colored film was also more effective than using colored bulbs, the original plan. Colored bulbs would have ...
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... the floating discs easier. If this experiment is conducted again, I will have corrected these errors and been more careful. In a follow up experiment, the rate of photosynthesis can be calculated directly by the production of oxygen using oxygen probes. I could also calculate the rate increase in biomass in the plants. However in doing so, I may need to increase my sample size from 10 to perhaps 50 or 100 to generate more accurate results. In a follow-up experiment I plan on measuring the effects of temperature on photosynthesis. Low temperature slow down rates of photosynthesis by slowing down enzymatic processes. High temperatures denature enzymes and have similar results. With this knowledge I would explore how do rapid fluctuations in temperature impact plant growth, and is there a plant species resistant to these changes? Only further research can answer this.
As the light is increased so would the rate of photosynthesis. Apparatus: boiling tube, 250ml beaker, bench lamp, ruler, sodium
Experiment #1: The purpose of this experiment is to investigate the effects of baking soda and light intensity on the rate of photosynthesis of green spinach leave through the observation of floating disk.
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
= > [CH2O} + O2 + H2O, This shows that when the light intensity is increased the rate of reaction will be more quicker he only anomalous result there was, is the one in the 100 watt result the reading after 5 minutes is anomalous because it does not follow the predicted pattern of increasing in the production of gas because it is lower I know from my own knowledge of photosynthesise that when the light intensity is increased the rate of reaction will be more quicker because many plants and trees photosynthesise quicker in stronger light and photosynthesise slower in dimly lit places. The chlorophyll absorbs light energy and enables it to be used by the plant for building up sugar. The overall effect is that energy is transferred from sunlight to sugar molecules.
Overview of Cellular Respiration and Photosynthesis Written by Cheril Tague South University Online Cellular Respiration and Photosynthesis are both cellular processes in which organisms use energy. However, photosynthesis converts the light obtained from the sun and turns it into a chemical energy of sugar and oxygen. Cellular respiration is a biochemical process in which the energy is obtained from chemical bonds from food. They both seem the same since they are essential to life, but they are very different processes and not all living things use both to survive ("Difference Between Photosynthesis and Cellular Respiration", 2017). In this paper I will go over the different processes for photosynthesis and the processes for cellular respiration and how they are like each other and how they are essential to our everyday life.
filters and count the number of oxygen bubbles given off using a pencil dot technique. Prediction I predict that with a blue filter the photosynthetic rate will be the as blue is a highly absorbent color it also has a short wavelength carries the most energy. The color to have the least photosynthetic rate will be green as it has quite a short wavelength so a lot of energy will be reflected by the plant and not absorbed in the sand. Yellow and orange will have average photosynthetic rates. although orange will be slightly more as it is more absorbent than yellow even low it has a longer wavelength and does not carry as much.
All living organisms require energy. In order to obtain energy, cells within the organisms must go through the processes of cellular respiration and/or fermentation. The way in which “oxidation of glucose leads to ATP production” is emphasized in cellular respiration (Freeman et al., 2014).
The Effect of Light Intensity on Photosynthesis Of Elodea Canadensis Introduction I wanted to find out how much the light intensity affected the Photosynthesis in Elodea Camadensa. I decided to do this by measuring the amount of oxygen created during photosynthesis. Photosynthesis is the procedure all plants go through to make food. This process uses Carbon dioxide, water and light energy. It produces Oxygen and Glucose.
3. Why did you put your syringes containing leaf material in the dark prior to illumination?
Increasing the light intensity will make photosynthesis faster. Variables: In this experiment there are a few things we have to keep the same.
Photosynthetic pigments are essential for life because they allow photosynthesis to occur by capturing sunlight which is then used alongside carbon dioxide and water to form organic compounds such as glucose and oxygen. The pigments allow the conversion of light energy to chemical energy which other organisms can benefit from. Oxygen is utilised by other organisms in aerobic respiration. The different pigments present in the chloroplasts allow a wide variety of wavelengths of light to be absorbed for efficient photosynthesis and provide colours to the plant to attract pollinators.
I chose to test the effect light has on plants because it is very interesting to test that light is a very important factor, and as the earth gets hotter it will be interesting to see what will happen at the end while sunlight is important at the moment and is a core ingredient for photosynthesis, it will also be very interesting to see what would happen if the plants had no exposure to sun at all, and if they would adapt.
The Effect of Light Intensity on the Rate of Photosynthesis in an Aquatic Plant Introduction The input variable I will be investigating is light, as light is just one of the 4 factors required in the green-plant process of photosynthesis. Photosynthesis is the process by which green-plants use sunlight, carbon dioxide, water & chlorophyll to produce their own food source. This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthesis. Light is the factor that is linked with chlorophyll, a green pigment stored in chloroplasts found in the palisade cells, in the upper layer of leaves.
The Importance of Photosynthesis and What it Does for Life According to scientists, life is “the condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death, also the way of life of a human being or animal. ”("Life,”) In order for one to have life, one must have the nine characteristics to be considered a living thing. These nine characteristics are: all living things are made up of cells, living things are able to reproduce, living things use energy, maintain homeostasis, respond and adapt to the environment, grow and develop, have a life span, evolve over time, and are interdependent. All of the nine characteristics have one thing in common, something that is needed for all living things to work, even if they do not know it.
An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis. Introduction Photosynthetics take place in the chloroplasts of green plant cells. It can produce simple sugars using carbon dioxide and water causing the release of sugar and oxygen. The chemical equation of photosynthesis is: [ IMAGE ] 6CO 2 + 6H20 C 6 H12 O 6 + 6O2 It has been proven many times that plants need light to be able to photosynthesize, so you can say that without light the plant would neither photosynthesize nor survive.