unit3_study_guide

Living in the Environment: Principles, Connections, and Solutions (with CD-ROM and InfoTrac)

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Multiple Choice Questions 1-3 refer to the lettered points on the curves plotted on the graph below. The curves show two possible patterns of change in population size over time for a certain species of small mammal in an ecosystem. 1. Population growing exponentially. 2. Population decreasing at greatest rate. 3. Population growing at a decreasing rate. (2008 Practice #15) Which of the following can be estimated from the sample for the invertebrates in the pond? a. The species richness b. The pond’s productivity c. The uniformity of species distribution in the pond d. The degree of disturbance e. The stability of the ecosystem (2008 Practice #16) If the pond is resampled a year later, which of the following would best indicate that the pond had been adversely affected by the adjacent development? a. An uncommon species has become more numerous b. An increase in low-tolerance species has occurred c. A decrease in high tolerance species has occurred. d. Phylogenic diversity has increased e. The biodiversity of the pond has decreased (2008 Practice #20) Which of the following regions of the ocean is LEAST likely to contain photosynthetic organisms? a. Intertidal zone b. Zone of coastal upwelling c. Pelagic zone d. Euphotic zone e. Abyssal zone (2008 Practice #26) All of the following are commonly used to deal with the side effects of eutrophication in lakes except a. Applying herbicides to kill nuisance plants b. Dredging out lakes to deepen them c. Pumping oxygen into the lowest layers of water d. Introducing insects that eat certain nuisance plants e. Adding nitrates (2008 Practice #35) Which of the following elements is most likely to limit primary production in freshwater lakes?
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a. Oxygen b. Calcium c. Phosphorus d. Carbon e. Iron (2008 Practice #63) Defining characteristics of a wetland involve which of the following? I. Hydrology II. Soil type III. Species composition a. I only b. II only c. I and II only d. II and III only e. I, II, and III (2008 Practice #70) Which of the following is the best example of a keystone species? a. Sea otter b. Sea urchin c. Spotted Owl d. Snail darter e. Condor (2008 Practice #75) Which of the following is generally true of K-strategist species as compared to r-strategist species? a. They reach sexual maturity earlier b. They have more young c. They are more likely to be invasive species d. They have longer life spans e. Their population cycles are more rapid (2008 Practice #80) In Meditteranean climate regions like portions of California, a wetter than normal winter often leads to greater severity of fires the following summer. This seeming paradox occurs because increased rain leads to a. Greater accumulation of Chaparral biomass b. Higher pollination rates of annual flowers c. Greater recreational use of parklands d. Greater erosion and damage of access roads e. Decreased summer rainfall (2008 Practice #81) The largest area of old-growth forest in the United States is located in a. Alaska b. Montana c. California
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unit3_study_guide - MultipleChoice

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