(gang can u please mark my report and rate it out 10)
Investigating the impact of light intensity on oxygen production in Elodea
Introduction:
Photosynthesis is a chemical reaction that takes place inside a plant, producing food to enable the plant to survive. Carbon dioxide, water, and light are all needed for photosynthesis to take place. The scientific explanation behind this experiment is that high light intensity produces more oxygen bubbles because light produces the energy required for plants.
Aim: To investigate how light intensity helps to produce oxygen in Elodea
Hypothesis: âIf the plant is closer to the light source, then more oxygen bubbles will be produced because high energy is given to the plantâ
Method:
- Position the lamp 10cm away from the beaker and record the number of oxygen bubbles produced in one minute.
- Repeat this process by moving the lamp 20cm, 30cm, and then 40cm away from the beaker.
- Record your observations.
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Equipment
- Metre Ruler
- Lamp
- Test Tube Beaker
- Retort Stand
- Elodea
- Water
- Stopwatch
Results
Distance of Elodea plant from the light source (cm) - Production of Oxygen Bubbles/Minute
10 - 40
20 - 20
30 - 10
40 - 5
Discussion
The results shown above are the findings for this experiment. It can be interpreted from the data that the distance from the plant and the light source is increased each time by 10 cm. As the distance increases away from the plant, the oxygen bubbles rate reduces by half each minute. Therefore, it can be confirmed that this data is expected to be accurate.
Light provides the energy required for lightâdependent reactions. Thus, this data can be expected because higher light intensity is efficient for more growth in plants.
However, there can be chances of errors being present. It is important to carefully count the bubbles properly in the given amount of time. If itâs not measured correctly, the experiment will not be a âfair testâ.
To improve the method, I would begin by increasing the distance between the plant and the light by 5 cm and would repeat it many times. Thus, it would be more accurate to analyze with closer distances than with further lengths. Secondly, I would repeat the attempt twice to see if it gives the same result.
Conclusion
This experiment was conducted to identify the impacts caused by light intensity on a plant. The data shows more bubbles are produced when the light source is near the plant. However, various attempts could have been repeated to confirm its accuracy. Thus, my hypothesis was proven that more oxygen bubbles will be produced if the light is near the plant.
