Question

Q8. Design an experiment that you could perform to see if a population of fruit flies—very small insects that feed on bananas—grows according to the exponential growth model or the logistic growth model.

Answer 1

One experiment that we could use to test the way in which fruit fly populations grow is to enclose a set amount inside a container with a food source and measure the population growth daily, then repeat this many times.

In order to test the way in which the fly population grows, we need an experiment that will allow us to gather data at set intervals. To do this we can create an experiment in which we set up multiple enclosures, each with a set amount of flies and one banana. Then measure the population on a day-to-day interval.

By performing the experiment with multiple enclosures, we can not only confirm that the results are accurate by having tested it many times, but we can also take the opportunity to test the effects of the food supply on population growth by adding more bananas and seeing if the population will increase at a different rate than the other enclosures.

Once a set number of days have passed, and we have the data corresponding to the population size each day, we can proceed to graph the data. Once graphed, we can analyze the data shown in order to observe whether the population is growing logistically or exponentially.

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