Environmental Biology

Ecotoxicology MCQs with Answers

Welcome to the Ecotoxicology MCQs with Answers. In this post, we have shared Ecotoxicology Online Test for different competitive exams. Find practice Ecotoxicology Practice Questions with answers in Biology Tests exams here. Each question offers a chance to enhance your knowledge regarding Ecotoxicology.

Ecotoxicology is the science concerned with toxic chemicals and their impacts on biological organisms normally in an ecosystem. This multi-disciplinary field of ecotoxicology acts like a sub-discipline put together out of elements of ecology, toxicology, and environmental science for understanding how pollutants relate to living organisms and the environment in terms of health. Ecotoxicological researchers study the origin, distribution, and effects of contaminants such as pesticides, heavy metals, and industrial chemicals-for instance-on wildlife and ecosystems.

One of the major objectives of ecotoxicology is the estimation of the ecological risk caused by chemical polluters. Therefore, many chemicals are evaluated relative to their environment, persistence, and bioaccumulation potential within the food chain. Hence, mercury and PCBs may accumulate in fishes and other aquatic species and thus pose extreme dangers to the predators when consumed by humankind. This understanding of these processes becomes vital further to formulate regulations and guidelines protecting the environment and human health.

One of the major ecotoxicological approaches applied for following the presence and impacts of contaminants is through biomonitoring. Information on contamination levels can be obtained from the study of several biological indicators, including tissue and fluid samples, and species population data. Ecotoxicology is also valuable in environment risk evaluations, and consequently it acts as the foundation of remediation activities that minimize the impact of contamination.

Ecotoxicology Online Quiz

By presenting 3 options to choose from, Ecotoxicology Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Ecotoxicology Questions and Answers and click over the correct answer.

  • Test Name: Ecotoxicology MCQ Quiz Practice
  • Type: Quiz Test
  • Total Questions: 40
  • Total Marks: 40
  • Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply click on question and comment below that question. so that we can update the answer in the quiz section.

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Ecotoxicology MCQs

Ecotoxicology

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1 / 40

Which term refers to the measurement of toxic effects on living organisms?

2 / 40

Which term describes the variety of life in a particular habitat or ecosystem?

3 / 40

Which process involves the breakdown of pollutants by microorganisms?

4 / 40

What is the primary effect of PCBs (polychlorinated biphenyls) in the environment?

5 / 40

What is the primary focus of ecotoxicology?

6 / 40

What is the main environmental concern with plastic pollution?

7 / 40

What is the purpose of an environmental impact assessment (EIA)?

8 / 40

Which gas is a major contributor to acid rain?

9 / 40

What is the term for substances that disrupt the endocrine system?

10 / 40

What is eutrophication?

11 / 40

Which term describes the study of how pollutants move through the environment?

12 / 40

What is a common source of lead contamination in the environment?

13 / 40

Which pollutant is primarily responsible for the depletion of the ozone layer?

14 / 40

What is the primary source of mercury pollution in the environment?

15 / 40

Which term describes chemicals that cause cancer?

16 / 40

What is the term for the recovery of degraded ecosystems through human intervention?

17 / 40

What is the purpose of environmental monitoring programs?

18 / 40

What is the main effect of soil contamination by heavy metals?

19 / 40

Which term refers to the maximum concentration of a substance that organisms can tolerate without adverse effects?

20 / 40

Which organization is responsible for regulating chemical safety in the United States?

21 / 40

What is a primary route of human exposure to environmental pollutants?

22 / 40

Which term describes the ability of a substance to be broken down by natural processes?

23 / 40

What is ecotoxicology?

24 / 40

What is the main consequence of habitat fragmentation?

25 / 40

Which pesticide is known for its long-term environmental persistence and harmful effects?

26 / 40

What is a common effect of heavy metal contamination in aquatic ecosystems?

27 / 40

What is the term for the introduction of harmful substances into the environment?

28 / 40

What is the effect of oil spills on marine life?

29 / 40

Which metal is particularly toxic to aquatic life and often monitored in water quality assessments?

30 / 40

What is the main effect of endocrine disruptors on wildlife?

31 / 40

What is the main concern with microplastics in the environment?

32 / 40

What is bioaccumulation?

33 / 40

What does the term "persistent organic pollutant" (POP) refer to?

34 / 40

Which pollutant is commonly known to cause eutrophication in water bodies?

35 / 40

What is biomagnification?

36 / 40

Which term refers to the measure of the degree to which a substance can damage an organism?

37 / 40

Which term describes the spread of pollutants from one part of the environment to another?

38 / 40

Which substance is known for causing biomagnification in food chains?

39 / 40

Which term describes a situation where a substance becomes more concentrated in organisms at higher trophic levels?

40 / 40

Which chemical is commonly associated with the thinning of bird eggshells?

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