5 Written questions
5 Matching questions
- 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.
- Release of organic chemicals into surface waters is good for the organisms that live in the waters, since the wastes add to the nutrients present for the food chains in the water.
- 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.
- Conservation biology supports all of the following ethical principles EXCEPT
A. biodiversity is desirable for the biosphere and humans.
B. all animals have the same rights or legal status as humans.
C. biodiversity has value in and of itself regardless of any practical human benefits.
D. extinctions due to human actions are undesirable.
E. the complex interactions of ecosystems support biodiversity and are desirable.
- Which of the following statements about keystone species is NOT true?
A. The extinction of keystone species can lead to other extinctions and a loss of biodiversity.
B. Keystone species are defined as a population subdivided into several small isolated populations due to habitat fragmentation.
C. Examples of keystone species are grizzly bears, bats, beavers and alligators.
D. The numbers of individuals in the keystone species in their respective community may or may not be excessively high.
- a B. all animals have the same rights or legal status as humans.
- b False
- c B. Keystone species are defined as a population subdivided into several small isolated populations due to habitat fragmentation.
- d C. Endangered wild species often become extinct due to different combinations of factors.
- e C. have many more species than formerly thought.
5 Multiple choice questions
- A. agricultural
- B. medicinal
- C. bioinformatics.
- C. acid rain or snow.
- A. flagship species.
5 True/False questions
Which of the following statements about pollution is NOT true?
A. When the ozone shield is destroyed, excess ultraviolet light reaches the Earth.
B. Water vapor and sulfur dioxide or nitrogen oxides combine to form wet or dry acid deposits.
C. A lake can die due to eutrophication, which is a lack of nutrients.
D. Synthetic chemicals can mimic hormones and cause abnormal growth and behavior in wild animals.
E. CFCs, like Freon, have chlorine atoms that breakdown the ozone shield. → C. A lake can die due to eutrophication, which is a lack of nutrients.
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.
Penicillin is derived from a fungus and certain species of bacteria produce tetracycline and streptomycin.
True False → B. medicinal
A _______ population lives in favorable conditions where the birthrate exceeds the death rate and individuals move into other, less successful, fragmented populations.
E. hotspot → B. source
Which of the following associations is (are) incorrect?
A. biodiversity - variety of life on Earth
B. landscape diversity - involves a group of interacting ecosystems
C. genetic diversity - variations in the species composition of communities at different locales
D. ecosystem diversity - variations among the members of a population
E. C and D are incorrect. → E. C and D are incorrect.