Ecology- Populations

Which of the following is NOT one of the four factors that play a role in growth rate?

• immigration

• death rate

• emigration

• demography

One of the main characteristics of a population is its

• change over time.

• geographic distribution.

• dynamics.

• habitat.

What does the range of a population tell you that density does not?

• the number that live in an area

• the areas inhabited by a population

• the births per unit area

• the deaths per unit area

When organisms move into a given area from another area, what is taking place?

• immigration

• emigration

• population shift

• carrying capacity

When organisms move out of the population they were born in, it is known as

• emigration.

• abandonment.

• immigration.

• succession.

What occurs in a population as it grows?

• The birthrate becomes higher than the death rate.

• The birthrate stays the same and the death rate increases.

• The birthrate becomes lower than the death rate.

• The birthrate and the death rate remain the same.

What is happening in a population as it decreases?

• The birthrate and the death rate remain the same.

• The death rate becomes lower than the birthrate.

• The death rate stays the same and the birthrate increases.

• The death rate becomes higher than the birthrate.

When individuals in a population reproduce at a constant rate, it is called

• logistic growth.

• growth density.

• exponential growth.

• multiple growth.

Which of the following describes how fast the human population is growing?

• slowly

• The population is remaining stable.

• exponentially

• The population is decreasing.

A biotic or an abiotic resource in the environment that limits the size of a population is a

• carrying capacity.

• limiting nutrient.

• limiting factor.

• growth factor.