Ecology Unit Test For Students! Quiz

19 Questions | Total Attempts: 274

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Ecology Unit Test For Students! Quiz

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Questions and Answers
  • 1. 
    • A. 

      The carnivores can provide more food for the Eskimos than the herbivores can.

    • B. 

      Polar bears can provide more food for Eskimos than seals can.

    • C. 

      Polar bear meat probably contains the highest concentrations of fat-soluble toxins.

    • D. 

      The total energy content of the seaweeds is lower than that of the seals.

    • E. 

      ) Seals are more numerous than fish.

  • 2. 
    The high levels of pesticides found in birds of prey is an example of
    • A. 

      Predation

    • B. 

      Biomagnification

    • C. 

      Carrying capacity

    • D. 

      A density-dependent effect

    • E. 

      A density-independent effect

  • 3. 
    Which of the following processes is NOT involved in the carbon cycle?
    • A. 

      Cellular respiration

    • B. 

      Decomposition

    • C. 

      Combustion

    • D. 

      Photosynthesis

    • E. 

      Ecological succession

  • 4. 
    In the nitrogen cycle, the bacteria that replenish the atmosphere with N2 are:
    • A. 

      Denitrifying bacteria

    • B. 

      Nitrogen-fixing bacteria.

    • C. 

      Nitrifying bacteria

    • D. 

      Paramecia

    • E. 

      Rhizobium bacteria

  • 5. 
    In which Canadian biome would you expect to find the most acidic soil?
    • A. 

      Temperate deciduous forest biome

    • B. 

      Grassland biome

    • C. 

      Tundra biome

    • D. 

      Tropical rainforest biome

    • E. 

      Boreal forest biome

  • 6. 
    In which biome would you find a root system that involves tap roots that run deep into the soil?
    • A. 

      Tundra biome

    • B. 

      Grassland biome

    • C. 

      Temperate deciduous forest biome

    • D. 

      Boreal forest biome

    • E. 

      Desert biome

  • 7. 
    Approximately what percentage of the atmosphere is made up of nitrogen gas?
    • A. 

      < 1%

    • B. 

      3%

    • C. 

      20%

    • D. 

      30%

    • E. 

      80%

  • 8. 
    Which of the following would NOT be an example of a density-dependent factor?
    • A. 

      Increased predation

    • B. 

      Disease caused by microorganisms

    • C. 

      Introduction of an exotic species

    • D. 

      Spraying with pesticides

    • E. 

      Food shortage

  • 9. 
    Which of the following factors that determine biotic potential describes the number of offspring that reach reproductive age?
    • A. 

      Birth potential

    • B. 

      Capacity for survival

    • C. 

      Procreation

    • D. 

      Length of reproductive life

    • E. 

      Carrying capacity

  • 10. 
    For the following graph of survivorship, which curve represents a species that displays little parental care and high biotic potential?
    • A. 

      Type I

    • B. 

      Type II

    • C. 

      Type III

    • D. 

      Type I and II

    • E. 

      Type I and III

  • 11. 
    Organic substances always contain atoms of which of the following elements?
    • A. 

      Hydrogen and carbon

    • B. 

      Carbon and oxygen

    • C. 

      Oxygen and nitrogen

    • D. 

      Carbon and nitrogen

    • E. 

      Oxygen and hydrogen

  • 12. 
    Which of the following is FALSE regarding nitrogen-fixation?
    • A. 

      Nitrogen-fixation involves the conversion of ammonia to nitrates.

    • B. 

      Nitrogen-fixation may be accomplished by the action of lightning.

    • C. 

      Nitrogen gas reacts with oxygen in the air to produce nitrates.

    • D. 

      Plants supply nitrogen-fixing bacteria with the sugar they need to make the nitrates.

    • E. 

      Nitrogen-fixation may be accomplished by bacteria that grow on the roots of legumes.

  • 13. 
    For the hare-lynx population-time graph below, what is the approximate carrying capacity for the lynx?
    • A. 

      10

    • B. 

      40

    • C. 

      60

    • D. 

      80

    • E. 

      100

  • 14. 
    The following table is taken from the "Guide to Eating Ontario Sportfish."  Based on the data presented, which fish would have accumulated the greatest amount of toxins?
    • A. 

      Pumpkinseed

    • B. 

      Yellow perch

    • C. 

      Largemouth bass

    • D. 

      Walleye

    • E. 

      Northern pike

  • 15. 
    The following table is taken from the "Guide to Eating Ontario Sportfish."  Based on the data presented, the fish that would be safest to eat would be:
    • A. 

      The ones higher in trophic level.

    • B. 

      The ones who are largest in size.

    • C. 

      The higher order carnivorous fish.

    • D. 

      The smallest fish at lower trophic levels.

    • E. 

      Only fish smaller than 55cm.

  • 16. 
    If you were to move from lower altitudes to higher altitudes, what would be the progression of biomes would you experience based on local vegetation?
    • A. 

      Tropical forest --> boreal forest --> tundra --> temperate deciduous forest

    • B. 

      Boreal forest --> tropical forest --> temperate deciduous forest --> tundra

    • C. 

      Temperate deciduous forest --> boreal forest --> tropical forest --> tundra

    • D. 

      Tropical forest --> temperate deciduous forest --> boreal forest --> tundra

    • E. 

      Tropical forest --> temperate deciduous forest --> tundra --> boreal forest

  • 17. 
    • A. 

      Primary succession

    • B. 

      Secondary succession

    • C. 

      Bioamplification

    • D. 

      Law of the minimum

    • E. 

      Law of tolerance

  • 18. 
    Trees that grow with deep tap roots would most likely be an adaptation for which biome?
    • A. 

      Tundra

    • B. 

      Grassland

    • C. 

      Boreal forest

    • D. 

      Temperate deciduous forest

    • E. 

      Desert

  • 19. 
    Wetlands experience ecological succession when they become invaded by aquatic plants, to eventually become swamps, and ultimately they develop into a peat bog.  This is an example of:
    • A. 

      Primary succession

    • B. 

      Secondary succession

    • C. 

      Eutrophication

    • D. 

      Deflected succession

    • E. 

      Climax community