Chpt 5 : How Populations Grow

What is the geographic range of a population?

• The number of individuals in a defined area

• The area inhabited by a population

• The growth rate of a population

• The dispersion of individuals in a population

Population density is the number of individuals that live in a defined area. True or False?

• True

• False

Fill in the blank: Population density is a measurement of the number of individuals living in a defined _______.

• space

• area

• region

• zone

What are the three types of geographic dispersion?

• Clumped, Uniform, Random

• Linear, Circular, Random

• Clumped, Linear, Uniform

• Random, Circular, Uniform

Fill in the blank: Growth rate > 0 indicates that the population size is _______.

• growing

• shrinking

• stable

• unknown

Fill in the blank: A population may increase in size if individuals arrive from elsewhere. This is called ________.

• immigration

• emigration

• migration

• population growth

Exponential growth in populations under ideal conditions is characterized by:

• a constant growth rate over time

• a rapid increase in population size

• a decrease in population size

• fluctuations in population size

What happens during a population crash?

• The population increases rapidly.

• The population remains stable.

• The population decreases drastically.

• The population migrates to a new area.

Which of the following is a type of limiting factor?

• Density-dependent

• Density-independent

• Both A and B

Density-dependent limiting factors operate strongly when population density reaches a certain level.

• True

• False