bio7_ch50 - Biology, 7e (Campbell) Chapter 50: An...

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1 Biology, 7e (Campbell) Chapter 50: An Introduction to Ecology and the Biosphere Chapter Questions 1) Important abiotic factors in ecosystems include which of the following? A) temperature B) water C) wind D) A and C only E) A, B, and C Answer: E Topic: Concept 50.1 Skill: Comprehension 2) "How does the foraging of animals on tree seeds affect the distribution and abundance of the trees?" This question A) is a valid ecological question. B) is difficult to answer because a large experimental area would be required. C) is difficult to answer because a long-term experiment would be required. D) A and B only E) A, B, and C are correct. Answer: E Topic: Concept 50.1 Skill: Comprehension 3) Which of the following statements about ecology is incorrect? A) Ecologists may study populations and communities of organisms. B) Ecological studies may involve the use of models and computers. C) Ecology is a discipline that is independent from natural selection and evolutionary history. D) Ecology spans increasingly comprehensive levels of organization, from individuals to ecosystems. E) Ecology is the study of the interactions between biotic and abiotic aspects of the environment. Answer: C Topic: Concept 50.1 Skill: Comprehension 4) Which of the following levels of organization is arranged in the correct sequence from most to least inclusive? A) community, ecosystem, individual, population B) ecosystem, community, population, individual C) population, ecosystem, individual, community D) individual, population, community, ecosystem E) individual, community, population, ecosystem Answer: B Topic: Concept 50.1 Skill: Knowledge
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2 5) Ecology as a discipline directly deals with all of the following levels of biological organization except A) population. B) cellular. C) organismal. D) ecosystem. E) community. Answer: B Topic: Concept 50.1 Skill: Comprehension 6) Landscape ecology is best described as the study of A) the array of interacting species within a community. B) abiotic factors and the community of species that exist in a particular area. C) related arrays of ecosystems. D) physiological and behavioral ways in which organisms meet the challenges of their environment. E) the factors affecting the abundance of single species. Answer: C Topic: Concept 50.1 Skill: Comprehension 7) You are working for the Environmental Protection Agency and researching the effect of a potentially toxic chemical in drinking water. There is no documented scientific evidence showing that the chemical is toxic, but many suspect it to be a health hazard. Using the precautionary principle, what would be a reasonable environmental policy? A) Establish no regulations until there are conclusive scientific studies. B) Set the acceptable levels of the chemical conservatively low, and keep them there unless future studies show that
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bio7_ch50 - Biology, 7e (Campbell) Chapter 50: An...

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