5 Written questions
5 Matching questions
- A _______ population survives in unfavorable conditions, has a birthrate that barely equals the death rate, and receives new members from other fragmented populations.
- Depletion of the ozone layer will lead to increased crop production and enhanced immune systems.
- 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.
- Landscape preservation is often intended for one particular organism but may benefit others.
- 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.
- a C. A lake can die due to eutrophication, which is a lack of nutrients.
- b False
- c D. A, B, and C only are correct.
- d True
- e B. sink
5 Multiple choice questions
- E. C and D are incorrect.
- B. Habitat loss
- A. The edge effect
- D. A, B, and C are correct.
- C. Endangered wild species often become extinct due to different combinations of factors.
5 True/False questions
Rabbits were introduced to Australia by pioneer settlers in the mid 1800s for sporting hunters. They have since stressed native marsupial and plant populations. This is an example of the introduction of exotic species through accidental transport.
True False → E. metapopulation.
Nitrogen oxides from automobile exhaust and sulfur dioxides from power plants combine with atmospheric water vapor to produce a weak acids, that may result in
A. the greenhouse effect.
B. ozone depletion.
C. acid rain or snow.
D. photochemical smog.
E. global warming. → True
Introduction of alien or exotic species into new ecosystems occurs by
A. colonization when new settlers arrive in an area.
B. accidental transport by ship or plane without anyone's knowledge.
C. agricultural and horticultural activities.
D. All of the choices are correct.
E. B and C only are correct. → B. Keystone species are defined as a population subdivided into several small isolated populations due to habitat fragmentation.
Animals that are revered by humans due to their appearance or emotional ties are
A. flagship species.
B. keystone species.
C. endangered species.
D. threatened species. → A. flagship species.
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. → B. Keystone species are defined as a population subdivided into several small isolated populations due to habitat fragmentation.