Unit 3 Population Test Review

Worldwide there were 20 births and 8 deaths per 1000 people in 2017. Calculate the growth rate of the world.

• 1.1%

• 2.8%

• 1.2%

• 1.6%

North Fremont’s population growth rate is 5%.  What is the doubling time for North Fremont?

• 1.4 years
• 14 years
• 140 years
• 35 years

The increase in the size of Earth’s human population in the last century has been dramatic. Which of the following identifies two major contributors to this increase?

• New methods of agriculture and the identification of new food crops
• The Industrial Revolution and modern medicine
• New methods of birth control and decreased warfare
• Increased education for women and the development of new pesticides

Which of the following is a true statement about replacement-level fertility?

• It equals the average number of children a woman will give birth to during her child-bearing years
• It equals the annual number of live births per 1,000 people in a population
• It equals the natural increase of a population in one year
• It is greater in countries with high infant-mortality rates than in countries with low infant-mortality rates

Which section would see exponential population growth?

• 1
• 2
• 3
• 4

The human population is currently following roughly a j-shaped curve.  This means that the population is growing

• arithmetically.
• sigmoidally.
• at a decreasing rate.
• exponentially.

An ecosystem's carrying capacity for a population is determined by all of the following factors EXCEPT

• energy.
• water.
• food.
• climatic events, such as tornadoes.

Rapid growth may be temporarily be observed in a population in response to all of these EXCEPT

• elimination of a pollutant.
• elimination of predators.
• increase in food supply.
• introduction of a new parasite.

Which of the following characteristics are typical of r-selected species?
I. They produce many offspring in a short period of time.
II. They have very low survivorship early in life.
III. They take a long time to reach reproductive maturity.

• I only
• II only
• III only
• I and II

Which organism would best represent a K-Strategist species?

• Ducks
• Sea Turtles
• Roaches
• Wolves