Measuring Populations — Unit test Answers

Which of the following conditions would lead to a small population size?

The total number of organisms an ecosystem can support is its tolerance range.

There are approximately 35,000 bald eagles in Alaska, which covers 586400 square miles. What is the population density for the bald eagles in Alaska?

For which method of determining population size is the population not aware of the sampler’s presence?

Which of the following selection pressures is responsible for the limited evolutionary changes experienced by alligators and other crocodilians?

Orange trees planted in a grove or orchard would most likely fall in which category of population distribution?

Which of the following statements about logistic growth curves is true?

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

The loss of an organism at the bottom of a food chain negatively impacts all organisms in the chain.

Adding an organism to a food chain does not affect the other members of the food chain, but removing an organism does.

Which of the following could result in secondary succession?

Yellowstone National Park has 124 wolves living in it. The park covers 3472 square miles. What is the population density of wolves living in Yellowstone?

The most common type of distribution pattern(s) in nature is(are) _______.

A S-shaped curve is called a(n) _______.

Population density is calculated by _______.

Variations within a species are an important part of Charles Darwin's theory of evolution. Which example can be explained by individual variation?

Which of the following species is an R-selected species?

How does conservation affect biodiversity?

Which of the following practices will lead to sustainability?