Ecotoxicology: Species Sensitivity and Environmental Risk
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Questions and Answers

What is the primary focus of ecotoxicology?

  • Studying the impact of pollutants on ecological communities and the biosphere (correct)
  • Developing new pesticides and herbicides
  • Understanding the biological effects of pollutants on individual organisms
  • Investigating the effects of pharmaceuticals on human health

    • What is the process by which pollutants become more concentrated in organisms as they move up the food chain?

  • Bioaccumulation
  • Biomagnification (correct)
  • Biodiversity decline
  • Habitat degradation

    • What is the term for the accumulation of pollutants within an organism?

  • Bioaccumulation (correct)
  • Ecological imbalance
  • Biomagnification
  • Habitat disruption

    • What is the result of pollutants disrupting the delicate balance of ecosystems?

    <p>Habitat degradation and biodiversity decline</p> Signup and view all the answers

    What is the scope of analysis in ecotoxicology compared to toxicology?

    <p>Broader, examining populations, communities, and ecosystems</p> Signup and view all the answers

    What is the range of pollutants that ecotoxicologists study?

    <p>A wide range of pollutants, including natural and man-made substances</p> Signup and view all the answers

    What is the primary objective of ecotoxicologists in identifying sensitive species to pollutants?

    <p>To assess the overall environmental risk</p> Signup and view all the answers

    What is the role of ecotoxicology in environmental protection?

    <p>To provide crucial information about potential risks to ecosystems</p> Signup and view all the answers

    What is the purpose of biomonitoring programs in ecotoxicology?

    <p>To utilize living organisms as indicators of environmental health</p> Signup and view all the answers

    What type of response to stress involves changes in hormone levels and metabolism?

    <p>Physiological changes</p> Signup and view all the answers

    What is an example of a physiological change in response to stress?

    <p>A deer experiencing increased heart rate and respiration</p> Signup and view all the answers

    What type of challenge to an organism's well-being can be caused by temperature changes?

    <p>Environmental stressor</p> Signup and view all the answers

    Which of the following behavioral changes can be exhibited by a stressed fish due to water pollution?

    <p>Avoidance behavior</p> Signup and view all the answers

    What is the benefit of selecting organisms that have a widespread distribution for biomonitoring?

    <p>To allow for a comprehensive assessment of environmental quality</p> Signup and view all the answers

    What type of changes can occur in trees due to chronic stress caused by a lack of water?

    <p>Morphological changes</p> Signup and view all the answers

    What is an important factor to consider when selecting organisms for biomonitoring programs?

    <p>Their tolerance to environmental variations</p> Signup and view all the answers

    What is the purpose of biomonitoring programs that utilize organisms as indicators of environmental health?

    <p>To monitor the responses of organisms to pollutants or other environmental stressors</p> Signup and view all the answers

    What type of changes can be exhibited by an organism in response to exposure to pollutants?

    <p>Physiological, behavioral, or morphological changes</p> Signup and view all the answers

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