Ecosystem MCQs with Answers

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

Ecosystem Online Quiz

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

Test Name: Ecosystem 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.

Ecosystem MCQs

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1 / 40

What is the trophic level of an organism that feeds on secondary consumers?

Primary consumer

Secondary consumer

Tertiary consumer

2 / 40

Which of the following is a limiting factor for plant growth in most ecosystems?

Carbon dioxide

Nitrogen

Phosphorus

3 / 40

What is a producer in an ecosystem?

An organism that decomposes dead matter

An organism that produces its own food through photosynthesis

An organism that eats other organisms

4 / 40

What is the term for the process by which water moves through the soil and into groundwater?

Percolation

Infiltration

Runoff

5 / 40

What is the term for the area where an organism lives and obtains its resources?

Habitat

Population

Niche

6 / 40

What is the difference between a food chain and a food web?

A food chain is more complex than a food web

A food chain shows a single pathway of energy flow, while a food web shows multiple interconnected food chains

A food chain includes only producers, while a food web includes only consumers

7 / 40

What is the term for the process by which water evaporates from the leaves of plants?

Condensation

Precipitation

Transpiration

8 / 40

Which of the following is a characteristic of a stable ecosystem?

High biodiversity

Rapid succession

Low biodiversity

9 / 40

What is the term for the study of the interactions between organisms and their environment?

Ecology

Genetics

Evolution

10 / 40

What is the term for the role of an organism within its ecosystem?

Niche

Habitat

Trophic level

11 / 40

Which of the following is an example of an abiotic factor in an ecosystem?

Predators

Temperature

Decomposers

12 / 40

What is the trophic level of an organism that feeds directly on producers?

Secondary consumer

Tertiary consumer

Primary consumer

13 / 40

Which of the following is a measure of the total amount of dissolved salts in water?

pH level

Salinity

Turbidity

14 / 40

What is the term for the process by which excess nutrients in water lead to increased plant growth and oxygen depletion?

Biomagnification

Eutrophication

Acidification

15 / 40

What is the term for the process by which nutrients are returned to the soil from dead and decaying organisms?

Photosynthesis

Respiration

Decomposition

16 / 40

Which of the following is an example of a natural ecosystem service?

Irrigation

Pollination

Pesticide application

17 / 40

What is the term for the gradual process of change and replacement of the types of species in a community?

Adaptation

Succession

Evolution

18 / 40

What is a decomposer in an ecosystem?

An organism that consumes other organisms

An organism that breaks down dead organic matter into simpler substances

An organism that produces its own food through photosynthesis

19 / 40

What is the term for the total mass of living organisms in a given area?

Biomass

Abundance

Biodiversity

20 / 40

What is the term for the process by which carbon dioxide is released into the atmosphere by burning fossil fuels?

Photosynthesis

Combustion

Respiration

21 / 40

Which biome is characterized by grasses, scattered trees, and a lack of precipitation?

Grassland

Rainforest

Tundra

22 / 40

What is the term for the process by which nitrogen compounds are converted back into nitrogen gas by bacteria?

Nitrification

Nitrogen fixation

Denitrification

23 / 40

Which of the following is a greenhouse gas that contributes to global warming?

Nitrogen

Carbon dioxide

Oxygen

24 / 40

What is the trophic level of an organism that feeds on primary consumers?

Tertiary consumer

Secondary consumer

Primary consumer

25 / 40

What is an ecosystem?

A biological community of interacting organisms and their physical environment

A laboratory experiment

A single organism

26 / 40

What is the term for the process by which organisms regulate their internal environment to maintain stability?

Adaptation

Homeostasis

Competition

27 / 40

What is the term for all the living organisms in an ecosystem?

Decomposers

Biotic factors

Abiotic factors

28 / 40

What is a consumer in an ecosystem?

An organism that produces its own food through photosynthesis

An organism that obtains energy by consuming other organisms

An organism that decomposes dead matter

29 / 40

What is the term for the process by which nitrogen gas is converted into ammonia by bacteria?

Denitrification

Nitrification

Nitrogen fixation

30 / 40

Which of the following is an example of a biotic factor in an ecosystem?

Sunlight

Soil

Plants

31 / 40

What is the term for the number of different species in a given area?

Abundance

Biodiversity

Biomass

32 / 40

Which of the following is a human activity that can disrupt ecosystems?

Deforestation

Reforestation

Conservation

33 / 40

Which biome is characterized by low temperatures, little precipitation, and permafrost?

Desert

Grassland

Tundra

34 / 40

What is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?

Respiration

Decomposition

Photosynthesis

35 / 40

Which of the following is a primary source of phosphorus for ecosystems?

Water

Rocks

Atmosphere

36 / 40

What is the term for the process by which water moves from the atmosphere to the Earth's surface?

Transpiration

Precipitation

Evaporation

37 / 40

What is the primary source of energy in most ecosystems?

Sunlight

Water

Soil

38 / 40

What is the term for the process by which bacteria convert ammonia into nitrites and then into nitrates?

Nitrification

Denitrification

Nitrogen fixation

39 / 40

Which biome is characterized by dense forests with high levels of precipitation?

Rainforest

Tundra

Desert

40 / 40

What is the term for the process by which pollutants accumulate in the tissues of organisms as they move up the food chain?

Acidification

Biomagnification

Eutrophication

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admin3 weeks ago

0 17 1 minute read