Population Size — Unit test Answers

Lions live in groups called prides. Lion populations would most likely fall in which category of population distribution?

Which method to determine population size is the least invasive?

What is a possible cause for a decrease in ecosystem productivity?

There are approximately 30,000,000 white-tailed deer in the United States, which covers 3,536,000 square miles. What is the population density, rounded to the nearest whole number, for the white-tailed deer?

Why was the reduction of the bison population to under 1,000 individuals a bottleneck event for the species?

Which of the following is not true about Darwin’s book On the Origin of Species?

Natural selection is an evolutionary mechanism by which _______.

Which of the following is a possible reason for migration?

Which of the following is not an example of predation?

Less than 0.1% of the energy in a food chain generally makes it from the sun to quaternary consumers.

Which of the following is a possible long-term consequence of two organisms occupying the same niche?

Which of the following limiting factors would be directly affected by a drought?

The events that lead to genetic drift are _______.

Which of the following is not a reason that populations display a regular (evenly spaced) distribution?

For the following organisms, choose the correct order of increasing trophic level.

Similarities between seemingly unrelated organisms can be explained by Darwin’s theory that organisms come from common ancestors.

Consider the following food chain:Garden plants are eaten by snails, which are eaten by birds, which are eaten by the household cat.

Which of the following human activities most likely resulted in the growth of the North American deer population?

Bees obtain food they need from flowers. The flowers benefit by having their pollen dispersed by the bees as they travel from flower to flower. What type of symbiotic relationship is this?

Which of the following is the best explanation for why finches on one of the islands in the Galapagos have large beaks while finches on another island have small beaks?