Succession — Unit test Answers

The formula to calculate population density is _______.

The mark and recapture method of determining population size is always more effective than the sampling method.

Which of the following statements about population distribution is not true?

Why are cane toads in Australia considered an invasive species rather than simply nonnative?

Which of the following samples has the greatest population density?

A population’s distribution can be even, clumped, or random.

Which is not a difference between a population showing exponential growth and a population showing logistic growth?

Logistic growth curves are density-dependent.

In a particular environment there is plenty of food, water, cover, and space to support a large population of pheasants, but a larger quantity of predators are introduced. The predators become the _______ for pheasants in that environment.

Succession is a process, with each new community paving the way for the next.

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

If China has a population of 1,355,935,022 people and an area of 3,705,405 mi, what is the population density of China?

Cane toads have spread widely as an invasive species in Australia because they have very few natural predators, and many native species are harmed or killed when attempting to prey on them.

How does population density differ from population size?

When two species compete for the same ecological niche, they cannot coexist because they are competing for the exact same resources. One species is always slightly better adapted for the niche than the other, so over time the disadvantaged species will either go extinct or shift to a different ecological niche. This situation highlights the concept of _______.

Yellowstone National Park has an average of about 4500 bison living in it. The park covers 3472 square miles. What is the population density of bison living in Yellowstone?