Population Dynamics (Quiz 1)

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

Population distribution applies only to animals. (B)

How does population density differ from population size?

Population size is the total number of organisms, while population density is the total number of organisms within a given area. (B)

Which of the following species is a K-selected species?

Redwood trees (A)

Which of the following statements about tolerance range is true?

Tolerance range is different for different organisms. (A)

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

True

R-selected species have a short life span and an early reproduction cycle.

True

Which of the following is an example of an even population distribution?

corn planted in a field (A)

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.

limiting factor (C)

Which of the following factors would have the smallest impact on a population's size?

the variety of organisms (C)

Which of the following factors would have the least effect on the carrying capacity of an ecosystem?

competitive exclusion (D)