bio lab report
lab report 1, 2
Jessica Gao
Lab Partners: Nicolas Mamakos, Dania Alhindawi, Brittney Stokes
Biology 10100 – 4 KM
Professor Johnson
September 26, 2019
Termite’s Behavior Lab Report
Termites Don’t Have Color Preference Comment by Erica Johnson: The title should be short but informative. The reader should have an idea of what you did just by reading it. Color preference when doing what?
Hypothesis
Before the experiment, the class isWhile observing how termites move and behave across a paper that are with randommarked with drawings. , oOur group observed that the termites didn’t went off the paper and ittended to follows the patterns of pen ink. The class had come up with different alternative hypothesis that can be tested such as the termites will follow circle rather than squarespecific shapes, and the termites prefer the red ink instead of the black ink, etcor colors. By class discussion, we decide to test the second hypothesis, and the null hypothesis will be termites has no color preference. Comment by Erica Johnson: The justification should explain how and why the class chose that particular hypothesis to test. Comment by Erica Johnson: The null hypothesis is mainly for statistical purposes. State what the experimental hypothesis of the class was.
Experimental Design
The independent variable for this experiment was the time in seconds which measure the time that the termite stays on the paper. The dependent variable is the frequency that the termites stays on the paper in each 10 second interval with a total 60 second interval. There are 2 types of level treatment: Red section ink, and black section ink. The class have 6 group so there are 6 replications of trails. There will be no control group, it’s all experimental group. The sample size are 30 termites per treatment level. The species of organisms that we use are termites. The method that we use to analyze data was ratio scales. Our experimental prediction is if the class use same type of white paper, termites, red pen ink and black pen ink, and draw one black line and red line as the same length of the manual book(xx inches) is and place them at the end tip of bothcolored lines, then we will expect to observe that the termites preferred the red ink than the black ink. Comment by Erica Johnson: The independent variable is the one we manipulate to test its effects on the dependent variable. Comment by Erica Johnson: The dependent variable is what we measured and believe to be affected by the independent variable. Comment by Erica Johnson: Where are your standardized variables? Comment by Erica Johnson: This would be true if we did not pool all the data together for the analysis. But since we did, we only have 1 replication. Comment by Erica Johnson: What species of termite? Reticulermes flavipes Comment by Erica Johnson: This is not an analytical method. Comment by Erica Johnson: How do you know they prefer them?
Specific methods missing! This should also include your analytical/statistical methods (e.g. calculated the mean, standard deviation, conducted a t-test, etc.) Comment by Erica Johnson: What did you do with the termites? What was the experiment? How did you measure their preference for a color?
Results and Data Analysis
The following two figures shows the frequency of termites spending in different ink area. Comment by Erica Johnson: Figures are not results, they help explain the results. You need to explain what you found in paragraph form and refer to the figures for visualization.
Figure 1. Comment by Erica Johnson: You were supposed to calculate the mean and standard deviation for the time termites spent on the different colored lines and provide a figure similar to figure 2 on page 24 of your lab book. Comment by Erica Johnson: This is a histogram, it doesn’t really provide much information about the data other than the distribution. Comment by Erica Johnson: Figures should have captions describing them. These should go below the figure.
t-value=0.0082
Figure 2.
t-value=0.067 Comment by Erica Johnson: I don’t know how you calculated 2 t values since t-tests are used to compare the means of two groups. You were supposed to calculate the t value and degrees of freedom for your samples and then compare them with the t-critical for a 95% confidence interval (see page 26 of your lab book). Comment by Erica Johnson: The t-test is what allows you to determine if there is support for your experimental hypothesis.
Discussion and Conclusions
Our group hypothesis was the termites will prefer the red ink more than the black ink. The t-value for red ink area are 0.0082 while the t-value for the black ink area are 0.067. Figure 1. and Figure 2. shows that the termites spend equal amount of time in both ink sections. According to the chart of distribution of t (CS, 29), the biological allow 5% difference of freedom on data. By looking at the 60 degrees of freedom (because there is 60 termites), the t-value has to be higher than 1 to show that the two data are different from each other. In conclusion, the results have failed to reject the null hypothesis. The future direction Comment by Erica Johnson: You should only have 1 t value because it’s a measure to compare 2 means. Comment by Erica Johnson: Incomplete sentence.
Works Cited Comment by Erica Johnson: References should also be cited in the main text. Guidelines on how to cite references are in pages 1-2 of your lab book.
Department of Biology. 2019. Course Supplement for Biological Foundations I Bio 10100. Department of Biology, City College of New York. ,NY
Frequency of Different Time Intervals the Termites Stays in the Red Ink Area
0~10 9 11~20 6 21~30 4 31~40 3 41~50 2 51~60 6
Time in seconds
Frequency
Frequency of Different Time Intervals the Termites Stays in the Black Ink Area
0~10 11 11~20 2 21~30 7 31~40 1 41~50 5 51~60 4
Time in seconds
Frequency