Biology Quizzes

Ecosystem MCQs with Answers

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.

An ecosystem is described as the complex interaction between the living and non-living things of the environment. They include plants, animals, microorganisms, water, soil, and air, which constitute this complicated web working together as one in producing a balanced system sustaining life. Among the most important processes that an ecosystem hosts are energy flow and nutrient cycling both deemed necessary to sustain life. Base of the food web Primary producers-which consist mainly of plants, but also include algae-capture energy from the sun in the process of photosynthesis. Consumers, or herbivores and carnivores, and decomposers like fungi and bacteria, are important components of transfer and recycling in an ecosystem.

Biodiversity refers to the diversity in life forms in an ecosystem-the features that enhance the health and stability of an ecosystem. An ecosystem with high biodiversity is better placed for recovery after the impacts of disturbances such as natural disasters or human activities are dissipated. Ecosystems provide a large list of ecosystem services that benefit humans, including clean air and water, fertile soils, pollination of crops, and climate regulation.

There exist various types of ecosystems, including forest, grassland, wetland, and aquatic and their characteristics and functions differ. Currently, most of the world’s ecosystems face threats from human activities such as deforestation, pollution, and climatic change. Thus, it calls for conservation efforts for protection and revival of the ecosystem towards sustainability of living in harmony with health.

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.

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Ecosystem MCQs

Ecosystem MCQs

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1 / 40

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

2 / 40

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

3 / 40

What is a producer in an ecosystem?

4 / 40

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

5 / 40

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

6 / 40

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

7 / 40

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

8 / 40

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

9 / 40

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

10 / 40

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

11 / 40

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

12 / 40

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

13 / 40

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

14 / 40

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

15 / 40

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

16 / 40

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

17 / 40

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

18 / 40

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

19 / 40

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

20 / 40

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

21 / 40

What is a decomposer in an ecosystem?

22 / 40

What is a consumer in an ecosystem?

23 / 40

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

24 / 40

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

25 / 40

What is the primary source of energy in most ecosystems?

26 / 40

What is an ecosystem?

27 / 40

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

28 / 40

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

29 / 40

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

30 / 40

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

31 / 40

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

32 / 40

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

33 / 40

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

34 / 40

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

35 / 40

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

36 / 40

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

37 / 40

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

38 / 40

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

39 / 40

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

40 / 40

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

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