Unit 2: Sustainability And Biodiversity: Multiple Choice

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  • 1. 
    What is an example of stewardship?
    • A. 

      Bioaugmentation

    • B. 

      Deforestation

    • C. 

      Extinction

    • D. 

      Biomagnification


  • 2. 
    What is an example of bottom-up population regulation?
    • A. 

      A drought causes grasses to decline, which reduces the number of grasshoppers. In turn, this reduces the number of shrews

    • B. 

      In a freshwater stream, bass prey on snail darters. The darters hide in rocky shelters, where crayfish prey on them. As a result, the darter population declines.

    • C. 

      Bald eagle populations decline as a result of bioaccumulation of DDT in their bodies. As a result, the rat population of the region increases.


  • 3. 
    Which factor best explains why the human population has grown so rapidly over the last 1000 years?
    • A. 

      Humans have decreased their reliance on natural resources.

    • B. 

      Humans have developed physical characteristics that increase their competitive advantage.

    • C. 

      Humans have increased the amount of resources available on Earth.

    • D. 

      Humans have increased the carrying capacity of the biosphere for the population.


  • 4. 
    When a population is maintained at its carrying capacity, it is said to be:
    • A. 

      A limiting factor

    • B. 

      Growing exponentially

    • C. 

      In equilibrium

    • D. 

      Inactive

    • E. 

      Unsustainable


  • 5. 
    What process may explain the decline in the number of tonnes of fish caught?
    • A. 

      Bioremediation

    • B. 

      Deforestation

    • C. 

      Extinction

    • D. 

      Overexploitation

    • E. 

      Succession


  • 6. 
    Food, space, disease, natural disaters, climate, competition and predation are example of what?
    • A. 

      Capacity Factors

    • B. 

      Limiting Factors

    • C. 

      Predation Factors

    • D. 

      Sustainable Factors


  • 7. 
    Which example is an ethical reason for the practice of stewardship?
    • A. 

      Humans need clean water to drink

    • B. 

      Humans need food to eat

    • C. 

      Future generations should get to enjoy the biosphere

    • D. 

      The ecosystem cycles nutrients that humans need

    • E. 

      The ecosystem provides raw materials for human use


  • 8. 
    Which pair of organisms displays mutualism?
    • A. 

      Brain worms and deer

    • B. 

      Cave-dwelling bats and big brown bats

    • C. 

      Corals and algae

    • D. 

      Wolves and moose


  • 9. 
    The unexplained disapperance or diminished ability of a beehive to support itself is known as:
    • A. 

      Colony collapse disorder

    • B. 

      Decomposition

    • C. 

      Ecotourism

    • D. 

      Desertification


  • 10. 
    Which is not a benefit of maintaining sustainable forest ecosystems?
    • A. 

      Empty space on which to build homes

    • B. 

      Habitat for thousands of species

    • C. 

      Reduction of erosion in watersheds

    • D. 

      Regulation of weather patterns


  • 11. 
    In a kelp forest ecosystem, which species is a keystone species?
    • A. 

      Kelp

    • B. 

      Otter

    • C. 

      Sea Urchin

    • D. 

      Fish

    • E. 

      Rock


  • 12. 
    Limiting factos do not control carrying capacity.  Ex. Flying squirrels depend on holes in dead trees, local populations are affected if the removal of dead timber reduces the number of holes.
    • A. 

      True

    • B. 

      False


  • 13. 
    Urban sprawl affects the carrying capacity of an ecosystem.
    • A. 

      True

    • B. 

      False


  • 14. 
    Expontential growth is accelerated growth that produces a J-shaped curve when the population is graphed against time.
    • A. 

      True

    • B. 

      False


  • 15. 
    Examples of population growth:
    • A. 

      When an organism comes to a new habitat that has a lot of resources

    • B. 

      When a animal is predated upon

    • C. 

      When pressures on a population are removed


  • 16. 
    Intensification means adding new levels upward instead of outward.
    • A. 

      True

    • B. 

      False


  • 17. 
    The intensification policy:
    • A. 

      Adopted in Ontario

    • B. 

      Urban sprawl is good for the ecosystem

    • C. 

      Requires a big percentage of new development must occur on land within the city boundaries


  • 18. 
    Carrying capacity is the size of a population that can be indefinitely supported by the available measures and resources of the ecosystem.
    • A. 

      True

    • B. 

      False


  • 19. 
    Humans have figured out a way to increase the carrying capacity of their ecosystem:
    • A. 

      Altering the ecosystem so that more energy and resources can be consumed

    • B. 

      Using all our available resources in a short period of time

    • C. 

      Altering human behaviour


  • 20. 
    The top three ecological footprints in the world are:
    • A. 

      USA

    • B. 

      Ireland

    • C. 

      New Zealand

    • D. 

      Australia

    • E. 

      Canada

    • F. 

      Denmark


  • 21. 
    Sustainability is the use of a resource that doesn't cause long term depletion of the resource or affect the diversity of the ecosystem.
    • A. 

      True

    • B. 

      False


  • 22. 
    Resources and limiting factors are the only things that control the population of organisms.
    • A. 

      True

    • B. 

      False


  • 23. 
    How do organisms help to control their own population?
    • A. 

      Limiting Factors

    • B. 

      Helping Factors

    • C. 

      Available Resources

    • D. 

      Ecological Niches


  • 24. 
    More than one species can occupy the exact same ecological niche or provide the exact same services to their ecosystem.
    • A. 

      True

    • B. 

      False


  • 25. 
    Ecological niches include:
    • A. 

      Regulation of amount of resources available to them

    • B. 

      Amount of sunlight they are provided with

    • C. 

      How to order pizza

    • D. 

      Regulation of population sizes of other organisms and services related to matter cycling or energy flow


  • 26. 
    Bottom-up population regulation: A shortage in the plant resource at the base of the food chain causes declines in the animals in the higher trophic levels.
    • A. 

      True

    • B. 

      False


  • 27. 
    Top-down population regulation: The population of prey increases, therefore the population of predators increases. However, eventually the prey will decrease and predators will also decrease.
    • A. 

      True

    • B. 

      False


  • 28. 
    How can competition limit the size of a population?
    • A. 

      The more energy the organism spends competing the less energy it has to grow and reproduce.

    • B. 

      As the population increases the competition for resources also increases

    • C. 

      Organisms get along in perfectly with no competition


  • 29. 
    Competition can influence the niches and populations of competing species.
    • A. 

      True

    • B. 

      False


  • 30. 
    What is an example of mutualism gone bad?
    • A. 

      Algae leaving coral due to warmer temperature water

    • B. 

      Dandelion's and grass competing for space

    • C. 

      Brain worm living in the brain of a dear


  • 31. 
    Parasitism usually harms their hosts to some extent, therefore the relationship is good for the parasite and not for the host. However there are a few expectations, one of these is:
    • A. 

      Tick living on dog's body

    • B. 

      Brain worm living in the brain of a dear

    • C. 

      Tape worm in an organisms stomach


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