Population Notes Quiz

What defines a population in biological terms?

• A group of organisms of different species living in the same geographical area.

• A single organism living in a specific habitat.

• A group of organisms of the same species that live in a specific geographical area and interbreed.

• A community of various animals and plants living together.

Why is a population considered a reproductive group?

• Because organisms migrate together as a group.

• Because organisms usually breed with members of their own population.

• Because populations do not interact with other populations.

• Because populations consist of both living and nonliving elements.

What does the size of a population refer to?

• The age range of individuals in the population

• The number of individuals in the population

• The health of individuals in the population

• The genetic diversity of the population

What is the definition of population density?

• The distribution of different species in an area

• The number of individuals of the same species that live in a given unit of area

• The total mass of individuals in a population

• The number of species in a given unit of area

How is the change in population size over time represented?

• As a simple sum of births and deaths

• As a ratio of births to deaths

• As the difference between births and deaths

• As a product of births and deaths

What is immigration in the context of population dynamics?

• The process of individuals moving out of a population's range

• The process of individuals moving into a population's range from elsewhere

• The process of a population's size decreasing over time

• The process of a population's size increasing due to births

What does emigration refer to in ecological terms?

• The process of individuals being born into a population

• The process of individuals dying and reducing the population size

• The process of individuals moving into a population's range

• The process of individuals moving out of a population's range

How is the growth rate of a population calculated?

• Growth rate = births + deaths

• Growth rate = change in population / births

• Growth rate = change in population / time

• Growth rate = immigration - emigration

Which factors can cause the growth rates of populations to fluctuate?

• Changes in birth and death rates only

• Changes in immigration rates only

• Changes in emigration rates only

• Changes in birth, death, immigration, and emigration rates

Under which conditions does exponential growth typically occur in nature?

• When populations face significant competition and have many predators

• When populations have limited food and space

• When populations have plenty of food and space, and have no competition or predators

• When populations are migrating to new areas