Ecosystems and Communities
Chapter Test A
(removed questions on Freshwater and Marine Ecosystems)
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
_____ 7. A symbiotic relationship in which one organism is harmed and another benefits is
_____ 8. What is one difference between primary and secondary succession?
a. Primary succession is rapid and secondary succession is slow. b. Secondary succession begins on soil and primary succession begins on newly exposed surfaces.
c. Primary succession modifies the environment and secondary succession does not.
d. Secondary succession begins with lichens and primary succession begins with trees. _____ 9. A tropical rain forest may not return to its original climax community after which of the following disturbances?
a. burning of a forest fire
c. volcanic eruption
b. clearing and farming
d. flooding after a hurricane
_____ 10. Which two biomes have the least precipitation?
a. tropical rain forest and temperate grassland
b. tropical savanna and tropical dry forest
c. tundra and desert
d. boreal forest and temperate woodland and shrubland
_____ 11. Which landforms are not classified into a major biome?
b. mountain ranges
Complete each statement on the line provided.
16. Over time, some plants growing in an area are crowded out by other plants. The new plants use up water and nutrients needed by the previous plants. The disappearance of the first plants is due to
. 17. Predator is to prey as herbivore is to
18. Some orchids grow high on trees so that they can get enough light for photosynthesis. The trees are unaffected by the presence of the orchids. The relationship between the orchids and the trees is an example of
. 19. Regrowth of grasses, ferns, wildflowers, and saplings after a forest fire is an example of
In complete sentences, write the answers to the questions on the lines provided. 21. How are microclimates related to climates?
22. The concentration of...
Please join StudyMode to read the full document