Chapter 5: Population

The primary factors affecting population growth include birthrate, death rate, immigration, and...

• density

• geographic range

• emigration

• demography

Which factor might NOT contribute to an exponential growth rate in a given population?

• lower death rates

• higher birthrates

• less competition

• reduced resources

The graph shows a model of the growth of a bacterial population. Which of the following correctly describes the growth curve?

• demographic

• logistic

• limiting

• exponential

The maximum number of individuals of a particular species that a particular environment can support is its...

• logistic growth

• carrying capacity

• age structure

• population

If a population grows larger than the carrying capacity of its environment, the...

• death rate may rise

• birthrate may rise

• death rate must fall

• birthrate must fall

Which would be least likely to be affected by a density-dependent limiting factor?

• a small, scattered population

• a population with a high birthrate

• a large, dense population

• a population with a high immigration rate

Which would be most likely to be affected by a density-dependent limiting factor?

• a small, scattered population

• a population with a high birthrate

• a large, dense population

• a population with a high emigration rate

Which of the following is a density-independent limiting factor?

• a struggle for food, water, space, or sunlight

• predator/prey relationships

• flood damage from a hurricane

• parasitism and disease

The scientific study of human populations is called...

• ecology

• demography

• natural selection

• transition

Since the industrial revolution , human populations have...

• decreased

• reached carrying capacity

• grown more rapidly

• leveled off