第17章17捕食与食草主题消费者资源交互难度简单.pdfVIP

Chapter 17: Predation and Herbivory Topic: consumer-resource in ctions Difficulty: easy 1. Which of the following statements about parasites is orrect? A) A parasite may kill its host. B) A parasite may rease the likelihood of its host's dying from other causes. C) A parasite may reduce the fecundity of its host. D) A parasite may be specific to a single host species. Answer: A Topic: consumer-resource in ctions Difficulty: easy 2. Parasitoids resemble: A) parasites, in that they reside within and eat the tissues of a living host. B) predators, in that they inevitably kill their hosts. C) both of the above. D) none of the above. Answer: C Topic: consumer-resource in ctions Difficulty: moderate 3. Which of the following does not affect the abundance of its food supply? A) predator B) parasite C) parasitoid D) herbivore E) detritivore Answer: E Topic: consumer-resource in ctions Difficulty: moderate 4. For which of the types of consumer listed below would we be least likely to refer to its food source as a "host"? A) predator B) parasite C) parasitoid D) herbivore E) detritivore Answer: E Topic: consumer-resource in ctions Difficulty: easy 5. Which of the following feeds on living woody vegetation? A) grazer B) browser C) detritivore D) both A and B E) both B and C Answer: B Topic: predators and prey Difficulty: moderate 6. In research on relative sizes of m lian predators and their prey, Carbone and colleagues found that above 20 kg of body mass, most species of predators tend to focus on: A) prey animals much larger than their own body mass. B) prey animals close to their own body mass.