Exam 53: Populations and Life History Traits

A species population's size (N) may vary depending on a number of factors including crowding and resource limitation. As N approaches K (carrying capacity) for a certain population, which of the following outcomes is predicted by the logistic growth model?

To measure the population of lake trout in a 250-hectare lake, 500 individual trout were captured using nets and marked with a fin clip, then returned to the lake. The next week, the trout capture was repeated, and out of the 200 lake trout that were caught, 50 had fin clips. Using the mark-recapture estimate, the lake trout population size is predicted to be closest to which of the following?

Use the figure to answer the following question. Infant mortality and life expectancy at birth in developed and Developing countries (data as of 2005). What is a logical conclusion that can be drawn from the graphs about developed countries?

Which of the following is accurate about a population exhibiting exponential growth?

Which of the following techniques would most accurately measure the dispersion pattern of the population being studied?

Use the graph to answer the following question. Which of the following claims can be best supported using the data?

Two breeding female fish of the same species successfully reproduce, and one female lays 100 eggs, while the other female lays 1,000 eggs. Which one of the following outcomes is most likely, given the limits of fitness trade-offs?

In which of the following situations would you expect to find the largest number of r-selected individuals?

An undergraduate student is working in a research lab, and starting with a single bacterium, she cultures it in a flask of ideal nutrient broth at an optimum temperature over a two-hour period? Assume resources do not become limiting over this time frame.

Use the graph to answer the following question. Based on the data graphed here, which size clutch would likely result in the highest estimated overall reproductive success (fecundity) after one year?

Use the graph to answer the following question. In the figure, which of the arrows represents the carrying capacity?

Starting from a single individual, which estimate best predicts the size of a population of bacteria at the end of a 2-hour time period if they reproduce by binary fission every 20 minutes? (Assume unlimited resources and no mortality.)

Based on current growth rates, Earth's human population in 2019 will be closest to ________.