Environmental Toxicology MCQs with Answers

admin3 weeks ago

0 3 1 minute read

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

Environmental Toxicology Online Quiz

By presenting 3 options to choose from, Environmental Toxicology 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 Environmental Toxicology Questions and Answers and click over the correct answer.

Test Name: Environmental Toxicology 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.

Environmental Toxicology

Please fill out the form before starting Quiz.

1 / 40

What is the significance of the Stockholm Convention on Persistent Organic Pollutants (POPs)?

It regulates climate change

It aims to eliminate or restrict the production and use of POPs worldwide

It promotes pesticide use

2 / 40

What is environmental toxicology?

The study of plant growth

The study of climate change

The study of the effects of chemicals on ecosystems and organisms

3 / 40

What is the biomarker used to assess exposure to heavy metals in organisms?

Stomatal conductance

Chlorophyll

Metallothionein

4 / 40

What is the impact of acid rain on aquatic ecosystems?

It lowers pH and can harm aquatic organisms and their habitats

It promotes algal growth

It increases biodiversity

5 / 40

What is the role of heavy metals in environmental toxicology?

They promote plant growth

They are toxic and can accumulate in organisms and ecosystems

They reduce soil erosion

6 / 40

What is acute toxicity?

Long-term exposure effects

The effect on plant growth

Adverse effects that occur shortly after exposure to a single high dose of a toxic substance

7 / 40

What is the relationship between biodiversity and environmental resilience?

Higher biodiversity enhances ecosystem stability and resilience

Biodiversity does not affect resilience

Lower biodiversity increases resilience

8 / 40

What is the impact of microplastics on terrestrial ecosystems?

They improve air quality

They increase biodiversity

They can disrupt soil structure and affect soil-dwelling organisms

9 / 40

What is the role of biodegradation in the fate of organic pollutants?

It increases toxicity

It breaks down organic pollutants into simpler, less harmful substances

It promotes eutrophication

10 / 40

What is the role of bioindicators in environmental monitoring?

Chemical analysis

Soil pH measurement

Organisms used to assess the health of an ecosystem or pollution levels

11 / 40

What is the primary route of exposure to environmental contaminants in aquatic organisms?

Air

Soil

Water

12 / 40

What is the role of phytotoxicology in environmental toxicology?

To promote pesticide use

To study soil erosion

To study the effects of chemicals on plants

13 / 40

What is the concept of environmental justice in toxicology?

Fair treatment and involvement of all people, regardless of race or income, in environmental decision-making

The promotion of pesticides

The study of soil pH

14 / 40

What is the difference between point source and non-point source pollution?

Point source is natural

Point source comes from a specific location; non-point source comes from diffuse sources

Non-point source is controlled

15 / 40

What is eutrophication?

Soil erosion

Urbanization

Excessive nutrients in water causing algal blooms and oxygen depletion

16 / 40

What is bioaccumulation?

The absorption of sunlight

The accumulation of substances in an organism's body over time

The removal of toxins

17 / 40

What is the role of the Clean Water Act in environmental protection?

To promote pesticide use

To study plant growth

To regulate and protect the quality of surface waters

18 / 40

What is a toxicant?

A substance that causes adverse effects in organisms

A type of pesticide

A type of soil structure

19 / 40

What is the role of endocrine-disrupting chemicals (EDCs) in environmental toxicology?

Chemicals that interfere with hormone systems in organisms

Climate change

Soil contamination

20 / 40

What is the environmental fate of persistent organic pollutants (POPs)?

They bioaccumulate and persist in the environment for long periods

They break down quickly

They absorb water

21 / 40

What is the significance of the Kyoto Protocol in environmental protection?

It sets binding targets for reducing greenhouse gas emissions

It regulates water pollution

It promotes deforestation

22 / 40

What is the precautionary principle in environmental toxicology?

A principle that advocates taking preventive action in the face of uncertainty

A method to reduce pollution

A theory on plant growth

23 / 40

What is the concept of bioavailability in environmental toxicology?

The extent to which a substance is available for uptake by organisms

The role of plants

The impact on soil erosion

24 / 40

What is the difference between acute and chronic toxicity?

Chronic toxicity is short-term

Acute toxicity occurs shortly after exposure; chronic toxicity occurs over a longer period

Acute toxicity is long-term

25 / 40

What is the primary source of mercury contamination in aquatic ecosystems?

Natural volcanic activity

Industrial discharges

Agricultural runoff

26 / 40

What is the effect of oil spills on marine ecosystems?

They can devastate marine habitats and harm marine life

They improve water quality

They increase biodiversity

27 / 40

What is phytoremediation?

The study of plant growth

The process of photosynthesis

The use of plants to clean up contaminated environments

28 / 40

What is the main concern regarding nanoparticles in the environment?

Their potential toxicity and impacts on ecosystems and human health

Their role in climate change

Their use in agriculture

29 / 40

What is the impact of global warming on aquatic ecosystems?

It reduces pollution

It promotes biodiversity

It can alter water temperatures, precipitation patterns, and habitats

30 / 40

What is the role of the EPA (Environmental Protection Agency) in environmental toxicology?

To regulate and enforce environmental laws and standards

To study plant physiology

To promote industrial growth

31 / 40

What is the role of microorganisms in bioremediation?

To affect plant growth

To increase pollution

To degrade and detoxify pollutants in the environment

32 / 40

What is the purpose of risk assessment in environmental toxicology?

To study plant growth

To increase pollution

To evaluate potential hazards and risks of exposure to toxic substances

33 / 40

What is the primary cause of ozone depletion in the atmosphere?

Carbon dioxide emissions

Chlorofluorocarbons (CFCs)

Nitrogen oxides

34 / 40

What is the impact of deforestation on terrestrial ecosystems?

Loss of biodiversity, disruption of habitats, and soil erosion

Improvement in air quality

Increase in biodiversity

35 / 40

What is biomagnification?

The increase in concentration of a substance in organisms at higher trophic levels

The change in soil pH

The decrease in toxicity

36 / 40

What is the main concern regarding microplastics in aquatic environments?

Their ingestion by marine organisms and potential transfer through food chains

Their role in plant growth

Their impact on climate change

37 / 40

What is the role of detoxification enzymes in organisms?

To increase toxicity

To metabolize and eliminate toxic substances

To absorb nutrients

38 / 40

What is the role of genotoxicity tests in environmental toxicology?

To improve plant growth

To assess the potential of chemicals to cause genetic damage

To measure soil erosion

39 / 40

What is LD50?

A type of chemical

The dose of a toxic substance that is lethal to 50% of the population

The pH level of water

40 / 40

What is the main environmental concern associated with pesticides?

Their rapid breakdown

Their role in plant growth

Their persistence and potential to bioaccumulate in the environment

Download Certificate of Quiz Environmental Toxicology

On the end of Quiz, you can download the certificate of the quiz if you got more than 70% marks. Add a certificate to your job application or social profile (like LinkedIn) and get more job offers.

If you are interested to enhance your knowledge regarding English, Physics, Chemistry, and Computer please click on the link of each category, you will be redirected to dedicated website for each category.

admin3 weeks ago

0 3 1 minute read