Ecosystems and Communities Chapter Test A
(removed questions on Freshwater and Marine Ecosystems)
Multiple Choice
Write the letter that best answers the question or completes the statement on the line provided.
_____ 1. How does an area’s weather differ from the area’s climate?
a. Weather involves temperature and preciapitation and climate involves only temperature.
b. An area’s weather depends on where it is located on Earth and the area’s climate does not.
c. An area’s weather does not change very much and an area’s climate changes many times.
d. Weather is the area’s day-to-day conditions and climate is the area’s average conditions.
_____ 2. The tendency for warm air to rise and cool air to sink results in
a. global wind patterns. c. the seasons.
b. ocean upwelling. d. regional precipitation.
_____ 3. An organism’s niche is
a. the range of physical and biological conditions in which an organism lives and the way it obtains what it needs to survive and reproduce.
b. all the physical and biological factors in the organism’s environment.
c. the range of temperatures that the organism needs to survive.
d. a full description of the place an organism lives.
_____ 4. No two species can occupy the same niche in the same habitat at the same time a. because of the interactions that shape the ecosystem. b. unless the species require different abiotic factors. c. because of the competitive exclusion principle. d. unless the species require different biotic factors.
_____ 5. What would likely happen if the population of the bird species shown in the ecosystem in Figure 4–1 were to suddenly decrease? a. The fish population would decrease. b. The fish population would increase.
c. The fish population would remain the same. d. Fish would leave the ecosystem.
_____ 6. A wolf pack hunts, kills, and feeds on a moose. In this interaction, the wolves are a. hosts. c. mutualists. b. prey. d. predators.