Elodea Lab Report

1375 Words 6 Pages
The results from the experiment generally show the trials with full light intensity to have produced more oxygen, showing the elodea samples to have photosynthesised more than the lower light intensity trials. Trials 1 and 2 were in water bath 1 with full light intensity, whereas Trials 3 and 4 were in water bath 2, with lower light intensity. Experimental error caused the trials with the lower light intensity to be disrupted, and no data was collected for these trials on Day 8 of the experiment.
Figure 5 shows the daily volume of oxygen produced by the elodea in each trial. A linear trend line was added to the data using Microsoft Excel. The general trend lines of Trials 1 and 2, the samples exposed to the full light intensity, show the trials to have produced the second and third
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Trial 1 and Trial 3 are very close in the amount of oxygen produced; Trial 1 produced 0.0022 mL more than Trial 3, as seen in Table 4. Trial 2 produced the third most oxygen and Trial 4 didn’t produce any. These calculations mostly support the hypothesis by showing a full light intensity trial to have produced the most oxygen per gram of elodea.
The number of leaves in each trial was counted so that calculations of the amount of oxygen produced by each leaf could be made, as seen in Figure 8b. Figure 7 displays these calculations; the results are similar to the other results previously explained, with Trial 3 producing the most amount of oxygen per leaf, then Trials 1, 2 and 4 producing less. Like the aforementioned results, this trend mostly supports the hypothesis.
There is a considerable difference between the results of Trial 3 and Trial 4; Trial 3 produced the most oxygen out of all the trials in the experiment, while Trial 4 produced no oxygen at all. The results in each of the different light intensity experiments can be averaged to eliminate some of the variance between the

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