The Ecology Quiz Challenge - 1

24 Questions

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The Ecology Quiz Challenge - 1

Take this quick interactive quiz to test your knowledge on ecology system.


Questions and Answers
  • 1. 
    Which of the following levels of organization is arranged in the correct sequence from most to least inclusive?
    • A. 

      Community, ecosystem, individual, population

    • B. 

      Ecosystem, community, population, individual

    • C. 

      Population, ecosystem, individual, community

    • D. 

      Individual, population, community, ecosystem

    • E. 

      Individual, community, population, ecosystem

  • 2. 
    Which of the following are important biotic factors that can affect the structure and organization of biological communities?
    • A. 

      Precipitation, wind

    • B. 

      Nutrient availability, soil pH

    • C. 

      Predation, competition

    • D. 

      Temperature, water

    • E. 

      Light intensity, seasonality

  • 3. 
    Deserts typically occur in a band at 30 degrees north and south latitude because
    • A. 

      Descending air masses tend to be cool and dry.

    • B. 

      Trade winds have a little moisture.

    • C. 

      Water is heavier than air and is not carried far over land.

    • D. 

      Ascending air tends to be moist.

    • E. 

      These locations get the most intense solar radiation of any location on Earth

  • 4. 
    Turnover of water in temperate lakes during the spring and fall is made possible by which of the following?
    • A. 

      Warm, less dense water layered at the top

    • B. 

      Cold, more dense water layered at the bottom

    • C. 

      A distinct thermocline between less dense warm water and cold, dense water

    • D. 

      The density of water changes as seasonal temperatures change

    • E. 

      Currents generated by nektonic animals

  • 5. 
    In temperate lakes, the surface water is replenished with nutrients during turnovers that occur in the
    • A. 

      Autumn and spring.

    • B. 

      Autumn and winter.

    • C. 

      Spring and summer.

    • D. 

      Summer and winter.

    • E. 

      Summer and autumn.

  • 6. 
    Which of the following causes Earth's seasons?
    • A. 

      Global air circulation

    • B. 

      Global wind patterns

    • C. 

      Ocean currents

    • D. 

      Changes in Earth's distance from the sun

    • E. 

      The tilt of Earth's axis

  • 7. 
    Which of the following events might you predict to occur if the tilt of Earth's axis relative to its plane of orbit was increased 33.5 degrees?
    • A. 

      Summers and winters in the United States would likely become warmer and colder, respectively.

    • B. 

      Winters and summers in Australia would likely become less distinct seasons.

    • C. 

      Seasonal variation at the equator might decrease.

    • D. 

      Both northern and southern hemispheres would experience summer and winter at the same time.

    • E. 

      Both poles would experience massive ice melts.

  • 8. 
    The main reason polar regions are cooler than the equator is because
    • A. 

      There is more ice at the poles.

    • B. 

      Sunlight strikes the poles at an lower angle.

    • C. 

      The poles are farther from the sun.

    • D. 

      The poles have a thicker atmosphere.

    • E. 

      The poles are permanently tilted away from the sun.

  • 9. 
    Generalized global air circulation and precipitation patterns are caused by
    • A. 

      Rising, warm, moist air masses cool and release precipitation as they rise and then at high altitude, cool and sink back to the surface as dry air masses after moving north or south of the tropics.

    • B. 

      Air masses that are dried and heated over continental areas that rise, cool aloft, and descend over oceanic areas followed by a return flow of moist air from ocean to land delivering high amounts of precipitation to coastal areas.

    • C. 

      Polar, cool, moist high pressure air masses from the poles that move along the surface, releasing precipitation along the way to the equator where they are heated and dried.

    • D. 

      The revolution of the Earth around the sun.

    • E. 

      Mountain ranges that deflect air masses containing variable amounts of moisture.

  • 10. 
    Which marine zone would have the lowest rates of primary productivity (photosynthesis)?
    • A. 

      Pelagic

    • B. 

      Abyssl

    • C. 

      Neritic

    • D. 

      Continental shelf

    • E. 

      Intertidal

  • 11. 
    You are planning a dive in a lake, and are eager to observe not many underwater organisms but be able to observe them both close up and far away. You would do well to choose
    • A. 

      An oligotrophic lake

    • B. 

      An eutrophic lake

    • C. 

      A relatively shallow lake

    • D. 

      A nutrient-rich lake

    • E. 

      A lake with consistently warm temperatures

  • 12. 
    Probably the most important factor(s) affecting the distribution of biomes is (are)
    • A. 

      Wind and ocean water current patterns

    • B. 

      Species diversity

    • C. 

      Proximity to large bodies of water

    • D. 

      Climate

    • E. 

      Day length of rainfall

  • 13. 
    In which of the following terrestrial biome pairs are both dependent upon periodic burning?
    • A. 

      Tundra and boreal forest

    • B. 

      Chaparral and savanna

    • C. 

      Desert and savanna

    • D. 

      Tropical forest and temperate deciduous forest

    • E. 

      Grassland and tundra

  • 14. 
    Which lake zone would be absent in a very shallow lake?
    • A. 

      Benthic zone

    • B. 

      Aphotic zone

    • C. 

      Pelagic zone

    • D. 

      Littoral zone

    • E. 

      Limnetic zone

  • 15. 
    Which of the following is true with respect to oligotrophic lakes and eutrophic lakes?
    • A. 

      Oligotrophic lakes are more subject to oxygen depletion.

    • B. 

      Rates of photosynthesis are lower in eutrophic lakes.

    • C. 

      Eutrophic lake water contains lower concentrations of nutrients.

    • D. 

      Eutrophic lakes are richer in nutrients.

    • E. 

      Sediments in oligotrophic lakes contain larger amounts of decomposable organic matter.

  • 16. 
    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

    • B. 

      III only

    • C. 

      I and II only

    • D. 

      II and III only

    • E. 

      I, II, and III

  • 17. 
    A cow's herbivorous diet indicates that it is a(n)
    • A. 

      Primary consumer.

    • B. 

      Secondary consumer.

    • C. 

      Decomposer.

    • D. 

      Autotroph.

    • E. 

      Producer.

  • 18. 
    To recycle nutrients, the minimum an ecosystem must have is
    • A. 

      Producers.

    • B. 

      Producers and decomposers.

    • C. 

      Producers, primary consumers, and decomposers.

    • D. 

      Producers, primary consumers, secondary consumers, and decomposers.

    • E. 

      Producers, primary consumers, secondary consumers, top carnivores, and decomposers.

  • 19. 
    Which of the following is an example of an ecosystem?
    • A. 

      All of the brook trout in a river drainage system.

    • B. 

      The plants, animals, and decomposers that inhabit an alpine meadow.

    • C. 

      A pond and all of the plant and animal species that live in it.

    • D. 

      The intricate interactions of the various plant and animal species on a savanna during a drought.

    • E. 

      Interactions between all of the organisms and their physical environment in a tropical rain forest.

  • 20. 
    Which of the following is true of detrivores (decomposers)?
    • A. 

      They recycle chemical elements directly back to primary consumers.

    • B. 

      They synthesize organic molecules that are used by primary producers.

    • C. 

      They convert organic materials from all trophic levels to inorganic compounds usable by primary producers.

    • D. 

      They secrete enzymes that convert the organic molecules of detritus into CO2 and H2O.

    • E. 

      Some species are autotrophic, while others are heterotrophic.

  • 21. 
    In general, the total biomass in a terrestrial ecosystem will be greatest for which trophic level?
    • A. 

      Producers

    • B. 

      Herbivores

    • C. 

      Primary consumers

    • D. 

      Tertiary consumers

    • E. 

      Secondary consumers

  • 22. 
    For most terrestrial ecosystems, pyramids of numbers, biomass, and energy are essentially the same-they have a broad base and a narrow top. The primary reason for this pattern is that
    • A. 

      Secondary consumers and top carnivores require less energy than producers.

    • B. 

      At each step, energy is lost from the system as a result of keeping the organisms alive.

    • C. 

      As matter passes through ecosystems, some of it is lost to the environment.

    • D. 

      Biomagnification of toxic materials limits the secondary consumers and top carnivores.

    • E. 

      Top carnivores and secondary consumers have a more general diet than primary producers.

  • 23. 
    Which of the following is primarily responsible for limiting the number of trophic levels in most ecosystems?
    • A. 

      Many primary and higher-order consumers are opportunistic feeders.

    • B. 

      Decomposers compete with higher-order consumers for nutrients and energy.

    • C. 

      Nutrient cycles involve both abiotic and biotic components of ecosystems.

    • D. 

      Nutrient cycling rates tend to be limited by decomposition.

    • E. 

      Energy transfer between tropic levels is in almost all cases less than 20% efficient.

  • 24. 
    Which of the following is caused by excessive nutrient runoff into lakes?
    • A. 

      Depletion of atmospheric ozone

    • B. 

      Turnover

    • C. 

      Biological magnification

    • D. 

      Greenhouse effect

    • E. 

      Cultural eutrophication