bio7_ch53 - Biology, 7e (Campbell) Chapter 53: Community...

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1 Biology, 7e (Campbell) Chapter 53: Community Ecology Chapter Questions 1) Communities can be linked by which of the following? I. predation II. systematics III. competition A) I only B) III only C) I and II only D) I and III only E) I, II, and III Answer: D Topic: Concept 53.1 Skill: Knowledge 2) Which of the following statements is consistent with the competitive exclusion principle? A) Bird species generally do not compete for nesting sites. B) The density of one competing species will have a positive impact on the population growth of the other competing species. C) Two species with the same fundamental niche will exclude other competing species. D) Even a slight reproductive advantage will eventually lead to the elimination of inferior species. E) Evolution tends to increase competition between related species. Answer: D Topic: Concept 53.1 Skill: Comprehension 3) The presence of all of the following tend to increase species diversity except A) competitive exclusion. B) keystone predators. C) patchy environments. D) moderate disturbances. E) migration of populations. Answer: A Topic: Concept 53.1 Skill: Comprehension 4) According to the competitive exclusion principle, two species cannot continue to occupy the same A) habitat. B) niche. C) territory. D) range. E) biome. Answer: B Topic: Concept 53.1 Skill: Knowledge
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Figure 53.1 5) The entire box shown in Figure 53.1 represents the niche of species A. Species A is biologically constrained from the striped area of its niche by species B. This is an example of A) dynamic stability. B) facilitation. C) commensalism. D) competitive exclusion. E) secondary succession. Answer: D Topic: Concept 53.1 Skill: Application 6) The sum total of an organism's interaction with the biotic and abiotic resources of its environment is called its A) habitat. B) logistic growth. C) biotic potential. D) microclimax. E) ecological niche. Answer: E Topic: Concept 53.1 Skill: Knowledge 7) Two barnacles, Balanus and Chthamalus , can both survive on the lower rocks just above the low-tide line on the Scottish coast, but only Balanus actually does so, with Chthamalus adopting a higher zone. Which of the following best accounts for this niche separation? A) competitive exclusion B) predation of Chthamalus by Balanus C) cooperative displacement D) primary succession E) mutualism Answer: A Topic: Concept 53.1 Skill: Comprehension 8) A species of fish is found to require a certain water temperature, a particular oxygen content of the water, a particular depth, and a rocky substrate on the bottom to thrive. These requirements are part of its A) dimensional profile. B) ecological niche. C) prime habitat.
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This note was uploaded on 09/08/2010 for the course BIOLOGY 182 taught by Professor Tracyscheinkman during the Summer '10 term at Pima CC.

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bio7_ch53 - Biology, 7e (Campbell) Chapter 53: Community...

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