Download Chapter 4 and 5 Practice Test_GroupFusion

Chapter 4 and 5 Test
Multiple Choice 2 points each
Identify the letter of the choice that best completes the statement or answers the question.
____ 1. The symbiotic relationship between a flower and the insect that feeds on its nectar is an
example of
a. mutualism because the flower provides the insect with food, and the insect
pollinates the flower.
b. parasitism because the insect lives off the nectar from the flower.
c. commensalism because the insect doesn’t harm the flower, and the flower
doesn’t benefit from the relationship.
d. predation because the insect feeds on the flower.
____ 2. Which is a biotic factor that affects the size of a population in a specific ecosystem?
a. average temperature of the ecosystem
b. type of soil in the ecosystem
c. number and kinds of predators in the ecosystem
d. concentration of oxygen in the ecosystem
____ 3. What is one difference between primary and secondary succession?
a. Primary succession is slow, and secondary succession is rapid.
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.
____ 4. An organism’s niche is
a. the way the organism uses the range of physical and biological conditions in
which it lives.
b. all the physical 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.
____ 5. As DDT moves up the trophic levels in food chains, its concentration
a. stays the same.
c. increases.
b. decreases.
d. is eliminated.
____ 6. Which two biomes have the least amount of 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
____ 7. The chemistry of aquatic ecosystems is determined by the
a. amount of salts, nutrients, and oxygen dissolved in the water.
b. number of other organisms present in the water.
c. amount of rainfall the water receives.
d. biotic and abiotic factors in the water.
____ 8. The unequal heating of Earth’s surface
a. drives wind and ocean currents.
b. causes winds that transport heat throughout the biosphere.
c. has important effects on Earth’s climate regions.
d. all of the above
____ 9. What does the range of a population tell you that density does not?
a. the number that live in an area
b. the areas inhabited by a population
c. the births per unit area
d. the deaths per unit area
____ 10. When individuals in a population reproduce at a constant rate, it produces a growth pattern
called
a. logistic growth.
c. demographic growth.
b. growth density.
d. exponential growth.
____ 11. You are most likely to observe primary succession when you visit a(n)
a. tropical rain forest
c. deep sea vent
b. abandoned field
d. fairly recent volcanic island
____ 12. If a population grows larger than the carrying capacity of the environment, the
a. death rate may rise.
c. population will grow faster.
b. birthrate may rise.
d. carrying capacity will change.
____ 13. About 500 years ago, the world’s population started
a. decreasing.
c. growing more rapidly.
b. to reach carrying capacity.
d. to level off.
____ 14. All of the following are threats to biodiversity EXCEPT
a. biological magnification of toxic compounds.
b. habitat fragmentation.
c. invasive species.
d. species preservation.
____ 15. In Rwanda, there are more young children than teenagers, and more teenagers than adults.
This age structure indicates a population that
a. has stopped growing.
b. will double in 30 years.
c. has a steady growth rate.
d. will decrease in 30 years.
____ 16. In countries like India, the human population is growing
a. exponentially.
b. transitionally.
c. logistically.
d. demographically.
____ 17. A resource, such as air, Antarctica or parts of the oceans, that is open to anyone is often
preserved and protected by
a. national organizations.
b. everyone.
c. the country near which it is located.
d. no one.
____ 18. Which is a way to limit deforestation?
a. use more wood products
b. plant and harvest trees on tree farms
c. increase carbon dioxide levels
d. fertilize the soil
____ 19. What does the range of a population tell you that density does not?
a. the number that live in an area
b. the areas inhabited by a population
c. the births per unit area
d. the deaths per unit area
____ 20. The number of different species in the biosphere is called
a. biodiversity.
c. genetic diversity.
b. ecosystem diversity.
d. species diversity.
____ 21. The major cause of ozone depletion is
a. nitric acid.
b. sulfuric acid.
c. chlorofluorocarbons (CFCs)
d. ultraviolet light.
____ 22. There is a limit to how large any given population can grow. Which of the following
statements best explains why a population must eventually stop growing?
a. A low female-to-male ratio
develops
in the population as it grows.
b. Old individuals outnumber
juveniles
in the population as it grows
c. The resources available are fully
used by the population as it
grows
d. Natural selection changes the
gene
pool of the population as it grows
____ 23. A population is correctly defined as having which of the following characteristics?
I. inhabiting the same general area
II. individuals belonging to the same species
III.
possessing a constant and uniform density and dispersion
a. I only
c. I and II only
b. III only
d. I, II, and III
____ 24. Which of the following is not likely to be a limiting factor on the sea otter population?
a. disease
c. drought
b. competition
d. predation
____ 25. The sum total of an organism's interaction with the biotic and abiotic resources of its
environment is called its
a. habitat
b. biotic potential
c. microclimax
d. ecological niche
____ 26. Dwarf mistletoes are flowering plants that grow on certain forest trees. They obtain
nutrients and water from the vascular tissues of the trees. The trees derive no known
benefits from the dwarf mistletoes. Which of the following best describes the
interactions between dwarf mistletoes and trees?
a. mutualism
b. parasitism
c. commensalism
d. competition
____ 27. Evidence shows that some grasses benefit from being grazed. Which of the following
terms would best describe this plant-herbivore interaction?
a. mutualism
b. parasitism
c. predation
d. competition
____ 28. Elephants are not the most common species in African grasslands. The grasslands
contain scattered woody plants, but they are kept in check by the uprooting activities
of the elephants. Take away the elephants, and the grasslands convert to forests or
to shrublands. The newly growing forests support fewer species than the previous
grasslands. Elephants can be defined as what type of species in this community?
a. redundant
b. dominant
c. keystone
d. none of the above
____ 29. Which factor can influence continual change in an ecosystem?
a. further disturbances
c. introduction of nonnative species
b. long-term climate changes
d. all of the above
____ 30. A builder is proposing a new housing development in an area of western Florida.
Construction of the housing development will destroy the wetland habitat in the area.
Which of the following would be the most likely consequence of the wetland’s
destruction?
a. The wetland plant species would
c. The wetland animal species would
disperse to adjacent meadow
habitats
b. The populations of wetland
animals would be unable to
survive in that area.
survive by interbreeding with
non-wetland species
d. The populations of wetland plants
would evolve to disperse seeds by
wind rather than water
____ 31. Climate conditions in a small area that differ from the climate of the surrounding area are
called
a. natural features.
c. biomes.
b. microclimates.
d. ecosystems.
____ 32. The graph below shows the levels of acidity that different kinds of freshwater fish
can tolerate. Low pH values mean the water is more acidic.
Based on the data, which of the following fish would most likely experience the largest
population declines due to acid rain pollution?
a. smallmouth bass
b. brown trout
____ 33. Primary succession can begin after
a. a forest fire.
b. a lava flow.
c. fathead minnow
d. yellow perch
c. farmland is abandoned.
d. a severe storm.
____ 34. Symbiosis in which both species benefit is called
a. commensalism.
c. predation.
b. mutualism.
d. parasitism.
____ 35. The series of predictable changes that occur in a community over time is called
a. population growth.
c. climax community.
b. ecological succession.
d. climate change.
____ 36. The chemistry of aquatic ecosystems is determined by the
a. amount of salts, nutrients, and oxygen dissolved in the water.
b. number of other organisms present in the water.
c. amount of rainfall the water receives.
d. biotic and abiotic factors in the water.