Ch 5 Quiz

An interaction in which an animal feeds on plants is called

• carnivory
• herbivory
• predation
• symbiosis

The pattern of spacing between individuals across the range of the population is its

• growth rate
• distribution
• density
• habitat

There are 150 Saguaro cactus plants per square kilometer in a 10-square-kilometer area of the Arizona desert. To which population characteristic does this information refer?

• growth rate
• geographic range
• age structure
• population density

Which of the following gives you information about a population's age structure?

• There are 10 males and 15 females under the age of two.
• There are 25 individuals with a square kilometer.
• All individuals are found at least 10 meters away from others.
• Individuals live in rain forests in tropical South America.

Which of the following is NOT one of the factors that play a role in population growth rate?

• immigration
• death rate
• emigration
• demography

The movement of organisms into a range is called

• immigration
• emigration
• population shift
• carrying capacity

Which of the following could describe a population that is decreasing in size?

• The birthrate and the death rate remain the same.
• The death rate is becoming lower than the birthrate
• The death rate is constant and the birthrate is increasing
• The death rate is becoming higher than the birthrate

If immigration and emigration numbers remain equal, which of these could cause a slowed growth rate?

• increased birthrate
• constant death rate
• decreased birthrate
• constant birthrate

Which are two ways a population can decrease in size?

• immigration and emigration
• increased death rate and immigration
• decreased birthrate and emigration
• emigration and increased birthrate

The graph in Figure 5-1 shows the growth of a bacterial population. Which of the following correctly describes the growth curve?

• logistic
• limiting
• demographic
• exponential