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Questions and Answers

Which of the following best describes the term 'ecology'?

  • The study of energy flow and nutrient cycling in ecosystems
  • The study of all complex interactions between organisms and their environment (correct)
  • The study of population dynamics and historical impacts
  • The study of distribution and abundance of organisms in space and time

What is the highest level of ecological organization?

  • Individuals
  • Populations
  • Biosphere (correct)
  • Communities

Which of the following is true about pelagic ecosystems?

  • Free willy and other charismatic megafauna have the greatest biomass in pelagic ecosystems
  • Microbial loops are not important in pelagic ecosystems
  • The biomass in pelagic ecosystems is greatest at the bottom of the food chain (correct)
  • Phytoplankton are the primary consumers in pelagic ecosystems

What is the process of testing hypotheses through experimentation called?

<p>Hypothesis testing (C)</p> Signup and view all the answers

Which of the following is true about hypothesis testing in ecology?

<p>Hypothesis testing involves looking at patterns first (C)</p> Signup and view all the answers

What is the purpose of experimentation in ecology?

<p>To manipulate the system and test predictions (C)</p> Signup and view all the answers

What is important to consider when conducting an experiment in ecology?

<p>Keeping the system unchanged (D)</p> Signup and view all the answers

What can affect population size in ecology?

<p>Growth, reproduction, movement, and natural mortality (C)</p> Signup and view all the answers

Which of the following best describes ecology?

<p>The scientific study of the interactions that determine the distribution and abundance of organisms (D)</p> Signup and view all the answers

Which of the following is NOT one of the levels of ecology mentioned in the text?

<p>Biodiversity (D)</p> Signup and view all the answers

What is the base of the pelagic ecosystem?

<p>Phytoplankton (A)</p> Signup and view all the answers

What is the greatest biomass in the food chain?

<p>Phytoplankton (B)</p> Signup and view all the answers

Which of the following is true about correlations and causation?

<p>Correlation can suggest a possible relationship, but does not prove causation (B)</p> Signup and view all the answers

What is the purpose of experimentation in establishing causation?

<p>To test predictions and manipulate the system (A)</p> Signup and view all the answers

What is the role of controls in experimentation?

<p>To ensure manipulation has caused unintended changes (D)</p> Signup and view all the answers

What is the purpose of fully caged and partially caged systems in the coral bleaching experiment?

<p>To test the effect of fish on coral recruitment (B)</p> Signup and view all the answers

Which of the following factors can heavily influence population growth and lead to collapse?

<p>Exploitation (D)</p> Signup and view all the answers

What is an example of asexual reproduction through budding or fragmentation?

<p>Seagrass (A)</p> Signup and view all the answers

Which of the following is true about population eruptions?

<p>They can occur but eventually collapse due to a lack of resources. (A)</p> Signup and view all the answers

What is the impact of overexploitation on population growth?

<p>It varies by species. (D)</p> Signup and view all the answers

Which of the following is a key factor that can contribute to the collapse of a population?

<p>Habitat destruction (B)</p> Signup and view all the answers

What is the main focus of population ecology?

<p>The study of how and why populations vary in size and distribution (D)</p> Signup and view all the answers

What is the role of phytoplankton in a pelagic ecosystem?

<p>They help fuel the ecosystem through photosynthesis (B)</p> Signup and view all the answers

What is the importance of understanding the borders of populations in population ecology?

<p>To manage fisheries (B)</p> Signup and view all the answers

Which of the following is a consequence of population growth?

<p>Increased energy consumption (C)</p> Signup and view all the answers

What is an example of population differences affecting the environment?

<p>Overfishing of anchovy in Peru and Chile (C)</p> Signup and view all the answers

What is an example of historical impact on biodiversity?

<p>Extinction of megafauna in North and South America (D)</p> Signup and view all the answers

What is an example of geologic change and evolution?

<p>Colonization of the Great Barrier Reef (B)</p> Signup and view all the answers

What is the current world population?

<p>8 billion (A)</p> Signup and view all the answers

What is the correlation between population size and environmental impact?

<p>Positive correlation (C)</p> Signup and view all the answers

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