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5 Written questions

4 Matching questions

  1. Biodiversity "frontiers" are areas that
    A. have high rates of extinction.
    B. lack diversity.
    C. have many more species than formerly thought.
    D. are replacing native species with exotic species.
    E. are fragile in comparison with other ecosystems.
  2. As "civilization" spread around the world, several species benefitted greatly from new human-made habitats, including the house fly, the Norwegian rat, and many crop plants. Generally, with expansion of human populations and agriculture,
    A. there has been an increase in biological diversity.
    B. biological diversity has remained the same, with human-associated organisms replacing the few natural species displaced.
    C. biological diversity has decreased but mainly with the elimination of pests by humans.
    D. biological diversity is decreasing at an accelerating rate with the elimination of many unstudied species.
  3. In spite of hundreds of millions of dollars spent on insecticides targeted at pest control for agricultural and medical purposes, man has been unable to drive any to extinction. On the other hand, the extinction of many species of birds, fishes, plants, and insects species have occurred as a result of
    A. hunting.
    B. farming.
    C. disease.
    D. habitat destruction.
    E. scientific collecting.
  4. Penicillin is derived from a fungus and certain species of bacteria produce tetracycline and streptomycin.
    True False
  1. a True
  2. b D. habitat destruction.
  3. c D. biological diversity is decreasing at an accelerating rate with the elimination of many unstudied species.
  4. d C. have many more species than formerly thought.

5 Multiple choice questions

  1. C. it contains an unusually high concentration of species.
  2. D. A, B, and C only are correct.
  3. E. metapopulation.
  4. A. Tropical rain forest land contains rich soil that is desirable as farmland.
  5. False

5 True/False questions

  1. The effect of global warming on coral reefs is
    A. negligible, since they will be protected underwater.
    B. minor since all marine environments are moderated by the great ability of water to hold temperatures constant.
    C. negative, since a rise of a few degrees will cause them to bleach and become lifeless.
    D. positive, since the higher temperatures will increase photosynthesis in the mutualistic algae.
    E. positive, since the greater sunlight to penetrate the sea will increase photosynthesis in the mutualistic algae.
    C. negative, since a rise of a few degrees will cause them to bleach and become lifeless.

          

  2. The Everglades ecosystem
    A. no longer receives water from natural sources as in the past and is drying out.
    B. contains sawgrass prairie and mangrove sloughs.
    C. has diverse bird, wildlife, and growing seasons
    D. A, B, and C are correct.
    E. B and C only are true.
    C. a natural phenomenon due to absorption of sunlight and re-radiating of the heat.

          

  3. Biodiversity is described in terms of genetic, community, and landscape diversity.
    True False
    True

          

  4. Landscape preservation is often intended for one particular organism but may benefit others.
    True False
    False

          

  5. Depletion of the ozone layer will lead to increased crop production and enhanced immune systems.
    True False
    B. Habitat loss

          

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