Topic Test Answers

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

Which of the following is not a possible consequence of the introduction of invasive species?

Directional selection only occurs in response to naturally occurring events.

The bottleneck event that the cheetah went through in the last ice age ultimately resulted in a stronger, more robust species.

Which of the following is not a reason for cluster distribution of organisms?

Which of the following species would you most expect to be distributed according to a regular pattern?

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

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

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

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

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

Which of the following is most likely an example of genetic drift resulting from the founder effect?

Bottleneck events are always caused by the death of most of a species’ population.

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?

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

What factor creates the most difficulty in predicting the possible consequences of different control methods?

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?

Explain how a bottleneck event can enrich recessive traits in the genetics of a population.