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practicemurray1 - Murray Practice Exam 1 This is a study...

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Murray Practice Exam 1 This is a study guide. Very few of these exact questions will be used on your exam. They simply serve as examples of the kinds of questions asked. A key will be handed-out at the end of a lecture. It is best to answer the questions on the sample exam before you check your answer with the key. Choose the Best Answer 1. Ecology is often defined as the study of interactions between living things and their physical environment. Which of the following is not a question of direct interest to ecologists? a. What factors influence abundance? b. How is matter and energy passed from one living thing to another? c. Why is a particular species no longer found in a given place? d. Why is a particular plant or animal species found in one place but not in another? e. Why are some traits inherited from both parents and others from only one parent? 2. Lichens, mosses, grass and sedges are conspicuous and abundant. Shrubs are stunted and trees are absent. Long, cold winters; short, cool summers. Average annual precipitation is from 5 to 45 inches. Which biome best matches this description? a. Deciduous (Temperate) Forest. . b. (Temperate) Grassland. c. Coniferous (Boreal) Forest. d. (Subtropical) Desert. e. (Artic) Tundra. Questions 3-5 . A biology student studied the abundance and dispersion of 4 species in his own community of prairie plants that was divided into 35 plots by a wire grid. 3. The student counted 25 individual Virginia wild rye plants in an unbiased sample of 7 plots. What is the estimated number of Virginia wild rye in the community?
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4. He completed his study of abundance and found: 35 plants of wild bergamot in 5 plots; 120 plants of rattlesnake master in 20 plots; and 140 plants of tall coreopsis in the entire community. Which species shows the highest density in this community? 5. He noted that the Wild Bergamot seedlings were close to a parent plant; where as Virginia wild rye plants were scattered with no regularity or affinity. Thus, he concluded that dispersion of Virginia wild rye was ________ and wild bergamot was _________. 6. 185 whooping cranes were counted in 2002 and a record population of 189 was counted in 2003. What was the finite rate of increase ( λ )? a. -0.022 b. 0.978 c. 1.021 d. 2.659 e. 4
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