Chapter 1
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| What is a boime? | a broad-scale region dominated by similar types of ecosystems.
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| A hypothesis refers to a(n) ________ | testable explanation for an observed phenomenon
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| A model is used by ecologists to do what? | make predictions about how nature works using a set of explicit assumptions.
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| A predator consuming prey would occur at the organizational level of the ________ | community
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| A scientist wants to manipulate glucose levels in amphibians to determine freeze tolerance at -5 Celsius. Which arena would suit this question best? | Laboratory experiment
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| All populations of different species living and interacting within an ecosystem are referred to collectively as a(n) _____ | community
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| An ecologist conducts a greenhouse experiment to study the effect of nitrogen concentration on the productivity of sunflower seedlings. What is the independent variable in this experiment? | concentration of nitrogen
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| An ecologist measured the length and weight of different individuals of a species of bird. The most common method of graphically displaying the data is a ______ | scatter plot
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| An ecologist who focuses on the individual could study all of the following, except a. behavior. b. death rate. c. physiology. d. morphology. | b. death rate.
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| An integrated set of hypotheses that together explain a broader set of observations is considered a(n) ______ | theory
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| Because ecology relies on many different branches of science (e.g., geology), it is considered ______ | interdisciplinary
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| Broad scale regions dominated by similar types of ecosystems are called ______ | biomes
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| Consider the question: "Why do tropical rain forests support a greater diversity of species than temperate forests?" At which level of organization would this be addressed? | global
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| Experiments done at Cedar Creek Long Term Ecological Research site are ideal for examining concepts at what level? | ecosystem
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| If x and y have a positive relationship as shown by a scatter plot, then the value of y will do what? | increase as the value of x increases
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| Moisture and concentration of oxygen ________. | are parts of an organism's environment
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| Science can best be described as what? | a search for evidence that proves our concepts wrong
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| The basic unit in ecology is the ________ | individual
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| The basic unit of ecology is the individual because it what? | passes genetic information to successive individuals
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| The correct sequence of the scientific method is what? | observation, ask a question, form a hypothesis, test a hypothesis, form a theory
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| The interaction of a biotic community and its abiotic environment is referred to as a(n) ________ | ecosystem
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| The real goal of hypothesis testing is to _________ | eliminate incorrect ideas
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| The term "ecology" is defined as the study of the ________ | relationships between organisms and their environment
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| Which economist influenced Darwin's conception of natural selection? | Thomas Malthus
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| Which model would you use to examine the relationship between nitrogen concentration and plant growth? | linear regression
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| Which of the following best represents the flow of the scientific method? | observation, question, hypothesis, predictions, hypothesis testing
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| Which of the following is a cornerstone of the science of ecology? | Darwin's theory of natural selection
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| Which of the following is an example of a biome? | tropical rainforest
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| Which of the following is considered an abiotic component of the ecosystem? a. temperature b. animals c. plants d. microbes | a. temperature
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| What question is most appropriate to an investigation at the population level? | What is the relationship between resource availability and birthrate?
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| What question is most appropriate to an investigation at the landscape level? | Which factors give rise to the spatial extent and arrangement of the various ecosystems?
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| Which of the following represents the correct organization of ecological systems from the lowest to the highest level of organization? | individual, population, community, ecosystem, biome, biosphere
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| Why is ecology considered an interdisciplinary science? | It involves and draws from various fields of science such as geology, hydrology, and meteorology.
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| _________ is activism with a stated aim of protecting the natural environment, particularly from the negative impacts of human activities. | Environmentalism
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| _____ is the scientific study of the relationship between organisms and their environment. | Ecology
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| A group of individuals of the same species that occupies a given area is referred to as a(n) ___________ | population
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| A(n) _______ is an abstract, simplified representation of a real system, allowing us to predict some behavior or response using a set of explicit assumptions. | Model
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| All populations of different species living and interacting within an ecosystem are referred to collectively as a(n) __________ | community
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| All science begins with an _______, which is the first step in the process known as the scientific method. | observation
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| At the ________ level, an ecologist might focus on the factors that affect the relative abundance of various populations in the area. | community
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| In a field experiment, an ecologist measures the effects of nitrogen on productivity, plotting data for nitrogen on the x-axis and productivity on the y-axis. In this experiment, the dependent variable is ________ | productivity
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| The _______ forms the basic unit in ecology. | individual
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| The living, or _____, and nonliving, or ________, components of the environment interact within an ecosystem. | biotic; abiotic
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Created by:
phebe
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