5 Written questions
5 Matching questions
- The situation with major oceanic fishing areas is
A. good, since the oceans are so large, they are the one remaining natural ecosystem that is not susceptible to extinction.
B. generally positive, with only one or two of the 15 major oceanic fishing areas over-exploited.
C. generally negative, with 11 of the 15 major oceanic fishing areas overexploited.
D. positive for the bottom dwellers that are protected but negative for the schools of swimming fish.
E. negative for the bottom dwellers that are over-fished by trawling but positive for the schools of swimming fish that can easily get away.
- 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
D. habitat destruction.
E. scientific collecting.
- Which of the following are of extinction?
A. habitat loss
B. exotic species
D. A, B, and C only are correct.
E. A and C only are correct.
- Each year, both forests and prairie grasslands are burned by fires, some started by lightning strikes and others caused by humans. However, many grasses are fire-adapted or dependent upon occasional fires to maintain their prairie system. Some pine trees are so dependent upon fire that they cannot propagate without it. Does this contradict our concerns about air pollution and carbon dioxide and carbon monoxide levels in the atmosphere?
A. Yes; fire is detrimental and further research should be done to correct the apparent biological adaptations that contradict eliminating all fires possible.
B. Yes; fire is detrimental in natural environments and these apparent adaptations are artificial situations due to human distortion of natural systems.
C. No; the environmental concerns listed in the text are all extremist concerns with no basis in factual data.
D. No; as with all complex systems, it is a matter of proportion; the current trend towards atmospheric pollution is far beyond the Earth's normal low level of natural fires, the effects of which were easily handled.
- Which of the following statements about extinction is TRUE?
A. Overexploitation by hunting and fishing is the major threat to tropical animals and plants.
B. Without human activity, all species would survive and there would be no extinctions.
C. Endangered wild species often become extinct due to different combinations of factors.
D. Commercial hunting and fishing are careful not to deplete animal reserves.
E. Introduction of new exotic species helps preserve biodiversity and slow extinction.
- a D. A, B, and C only are correct.
- b D. No; as with all complex systems, it is a matter of proportion; the current trend towards atmospheric pollution is far beyond the Earth's normal low level of natural fires, the effects of which were easily handled.
- c D. habitat destruction.
- d C. Endangered wild species often become extinct due to different combinations of factors.
- e C. generally negative, with 11 of the 15 major oceanic fishing areas overexploited.
5 Multiple choice questions
- C. have many more species than formerly thought.
- C. acid rain or snow.
- C. A lake can die due to eutrophication, which is a lack of nutrients.
- E. All of the choices are correct.
- A. flagship species.
5 True/False questions
The science of collecting, analyzing, and making readily available biological information is
A. habitat restoration planning.
B. landscape preservation.
D. a population viability analysis. → C. bioinformatics.
Madagascar is considered a biodiversity "hotspot" because
A. it originated as a volcanic island.
B. it has lost nearly all of its native species to extinction.
C. it contains an unusually high concentration of species.
D. it has resisted habitat destruction that has caused extinctions elsewhere.
E. All of the choices are correct. → C. it contains an unusually high concentration of species.
The greenhouse effect is
A. due to increased sunlight in recent years.
B. caused by increased plant life and photosynthesis.
C. a natural phenomenon due to absorption of sunlight and re-radiating of the heat.
D. a manmade hazard due to decreased levels of carbon dioxide and ozone in the atmosphere in recent years.
E. All of the choices are correct. → C. a natural phenomenon due to absorption of sunlight and re-radiating of the heat.
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.
_______ is (are) associated with 85% of the cases of threatened and endangered species.
B. Habitat loss
E. Exotic species → E. All of these are examples of introduced alien species.