bio7_ch54 - Biology, 7e (Campbell) Chapter 54: Ecosystems...

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1 Biology, 7e (Campbell) Chapter 54: Ecosystems Chapter Questions 1) What is the fundamental difference between matter and energy? A) Matter is cycled through ecosystems; energy is not. B) Energy is cycled through ecosystems; matter is not. C) Energy can be converted into matter; matter cannot be converted into energy. D) Matter can be converted into energy; energy cannot be converted into matter. E) Matter is used in ecosystems; energy is not Answer: A Topic: Concept 54.1 Skill: Comprehension 2) Which of the following best explains why energy cannot cycle through an ecosystem? A) the law of conservation of energy B) the second law of thermodynamics C) the competitive exclusion principle D) the green world hypothesis E) the principle of biomagnification Answer: B Topic: Concept 54.1 Skill: Comprehension 3) A cow's herbivorous diet indicates that it is a(n) A) primary consumer. B) secondary consumer. C) decomposer. D) autotroph. E) producer. Answer: A Topic: Concept 54.1 Skill: Knowledge 4) To recycle nutrients, the minimum an ecosystem must have is A) producers. B) producers and decomposers. C) producers, primary consumers, and decomposers. D) producers, primary consumers, secondary consumers, and decomposers. E) producers, primary consumers, secondary consumers, top carnivores, and decomposers. Answer: B Topic: Concept 54.1 Skill: Comprehension
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2 5) Which of the following terms encompasses all of the others? A) heterotrophs B) herbivores C) carnivores D) primary consumers E) secondary consumers Answer: A Topic: Concept 54.1 Skill: Comprehension 6) Production, consumption, and decomposition are important ecosystem processes. Which of the following could be decomposers? A) bacteria B) vertebrates C) invertebrates D) A and C only E) A, B, and C Answer: E Topic: Concept 54.1 Skill: Knowledge 7) Which of the following are responsible for most of the conversion of organic materials into CO 2 , which can be utilized in primary production? A) autotrophs B) bacteria C) fungi D) B and C only E) A, B, and C Answer: D Topic: Concept 54.1 Skill: Knowledge 8) The main decomposers in an ecosystem are A) fungi. B) plants. C) insects. D) prokaryotes. E) both A and D Answer: E Topic: Concept 54.1 Skill: Knowledge 9) Many homeowners mow their lawns during the summer and collect the clippings, which are then hauled to the local landfill. Which of the following alternatives would cause the least disturbance to local ecosystems? A) Don't mow the lawn-have sheep graze it and put the sheep's feces into the landfill. B) Collect the clippings and burn them. C) Either collect the clippings and add them to a compost pile, or don't collect the clippings and let them decompose on the lawn. D) Collect the clippings and wash them into the nearest storm sewer that feeds into the local lake.
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bio7_ch54 - Biology, 7e (Campbell) Chapter 54: Ecosystems...

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