How populations grow

What is a population?

• A group of different species living together

• All individuals of a species living in one place at one time

• A single individual of a species

• A group of species living in different places

What does the population of trout in a stream refer to?

• All fish in the stream

• Only the trout in that stream

• All aquatic animals in the stream

• The largest fish in the stream

Which of the following is NOT a key feature of populations?

• Population size

• Population density

• Population dispersion

• Population migration

What is a consequence of very small populations?

• Increased genetic diversity

• Decreased risk of extinction

• More inbreeding and less genetic diversity

• More migration

Why might Europe reward families with incentives to have large families?

• To decrease population size

• To increase population size

• To reduce migration

• To increase genetic diversity

What is the relationship between population size and extinction risk?

• Larger populations have a higher risk

• Smaller populations have a higher risk

• Population size does not affect extinction risk

• Only medium-sized populations are at risk

What is a potential consequence of reduced genetic diversity in a population?

• Increased resistance to disease

• Increased vulnerability to disease

• Increased population size

• Increased migration

What does a higher population density mean?

• Less competition for resources

• More competition for food, water, and shelter

• More available space

• Decreased population growth

How can high population density affect humans?

• It leads to more job opportunities

• It means more competition for jobs

• It results in more available housing

• It decreases the need for education

If you see a bunch of cows in a field, it is an example of __________ distribution.

• Clumped

• Uniform

• Random

• Linear