Populations

Which of the following best describes a population?

• members of the same species living in the same place at the same time
• all the red birds in an area
• all types of organisms living in the same place
• all members of the same species

Which of the following would most likely cause a large number of density independent deaths in a population?

• winter storms
• predators
• limited resources
• disease carrying insects

An example of a population is

• all trees in a forest
• all maple trees in a forest
• all plants in a forest
• all animals in a forest

The relationship between a Canadian lynx and a snowshoe hare is an example of 

• parasite and host
• predator and prey
• competition
• mutualism

Which of the following organisms has the highest reproductive potential?:

• dogs
• elephants
• bacteria
• humans

Countries that have entered the third stage of transition are probably

• weak or developing countries
• have death rates that far exceed birth rates
• have social conditions that favor small families
• have populations with a high proportion of young people

During stage 2 of a population's transition, the death rate

• increases
• decreases
• remains the same 
• is zero

Over a long period of time, each pair of adults in a population had only two offspring and the offspring lived to reproduce, the population would...

• grow
• shrink
• remain the same
• disperse randomly

Countries with high growth rates usually have an age structure that has

• an even age distribution over all ages
• more older people than young people
• more younger people than older people
• more middle aged people than younger people

Scientists predict population sizes by using 

• survivorship, migrations, life expectancy, and replacement structure
• age structure, fertility rate and migration
• replacement rate, fertility rate, age rates, and survivorship
• age structure, survivorship, fertility rate and migration