Ecosystems and Biodiversity MCQs with Answers

adminJune 13, 2024Last Updated: October 14, 2024

0 7 2 minutes read

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

Biodiversity and ecosystems are innate concepts to the health and stability of our earth. An ecosystem is defined as a dynamic network of living organisms, including plants, animals, and microorganisms, together with their physical environment. The interaction of these provides support for vital processes like energy flow and nutrient cycling in order to maintain living organisms. Biodiversity refers to the variety of life within an ecosystem, which enhances its resilience and productivity.

High biodiversity ensures ecological resilience to and recovery from disturbances of any kind such as natural hazards, climatic changes, and human activities. They provide a wide range of species in which to make various ecological functions in the offering of ecosystem services in regions of pollination, water purification, and soil fertility. Amongst them are some diversified ecosystems that include forests and wetlands, grasslands, and oceans that contain unique ranges of species responsible for their functionality.

Human activities-which range from cutting down trees and pouring polluting chemicals into water bodies to plowing under land to urbanize it-put a great strait on both ecosystems and biodiversity. These consequences include habitat destruction, extinction of species, and interference with the proper functioning of biological communities. Most solutions fall under protecting and rehabilitating the ecosystem. This serves in the role of maintaining biodiversity and aids in further providing for sustainable uses. Some of these forms include protected areas, habitat restoration, and sustainable agriculture.

Ecosystems and Biodiversity Online Quiz

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

Test Name: Ecosystems and Biodiversity 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.

Ecosystems and Biodiversity

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1 / 40

The process by which water changes from liquid to vapor and back to liquid is called ____.

Water cycle

Carbon cycle

Nitrogen cycle

2 / 40

Which of the following is an example of an ecosystem service provided by wetlands?

Timber production

Air pollution

Water filtration

3 / 40

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

Tundra

Grassland

Rainforest

4 / 40

The biome characterized by grasslands with scattered trees and a distinct rainy season is the ____.

Taiga

Savanna

Chaparral

5 / 40

The major global ecosystem characterized by trees that shed leaves in the fall is the ____.

Temperate deciduous forest

Grassland

Desert

6 / 40

Which biome is characterized by low temperatures, permafrost, and low-growing vegetation?

Desert

Tundra

Tropical rainforest

7 / 40

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

Temperature

Decomposers

Predators

8 / 40

The process by which carbon is cycled between organisms and the environment is called ____.

Carbon cycle

Nitrogen cycle

Water cycle

9 / 40

The study of the interactions between living organisms and their environment is called ____.

Ecology

Biogeography

Genetics

10 / 40

The process by which carbon dioxide is taken up by plants during photosynthesis is ____.

Carbon fixation

Nitrogen fixation

Water fixation

11 / 40

The ecological pyramid that represents the energy flow in an ecosystem is called a ____.

Pyramid of biomass

Pyramid of energy

Pyramid of numbers

12 / 40

The movement of individuals out of a population is called ____.

Immigration

Emigration

Migration

13 / 40

Which of the following is an example of a decomposer in an ecosystem?

Fungi

Carnivore

Herbivore

14 / 40

The place where an organism lives and obtains its resources is its ____.

Range

Niche

Habitat

15 / 40

The type of succession that occurs on bare rock where no soil is present is called ____.

Primary succession

Secondary succession

Tertiary succession

16 / 40

The top layer of the ocean where light penetration allows photosynthesis is the ____.

Abyssal zone

Hadal zone

Photic zone

17 / 40

The number of different species in a given area is called ____.

Species evenness

Species dominance

Species richness

18 / 40

The relationship between a flower and a bee that pollinates it is an example of ____.

Parasitism

Mutualism

Commensalism

19 / 40

The variety of different species within an ecosystem is referred to as ____.

Biomass

Biodiversity

Biogeography

20 / 40

The relationship between plants and mycorrhizal fungi is an example of ____.

Mutualism

Commensalism

Parasitism

21 / 40

The process by which water returns from the atmosphere to Earth's surface is ____.

Precipitation

Condensation

Evaporation

22 / 40

The process by which nitrogen is converted between its various chemical forms is called ____.

Nitrogen fixation

Photosynthesis

Carbon fixation

23 / 40

The process by which plants release water vapor into the atmosphere is called ____.

Evaporation

Transpiration

Respiration

24 / 40

A keystone species is one that ____.

Has a disproportionately large impact on its ecosystem

Is a primary producer

Is endemic to a specific area

25 / 40

The process by which organisms regulate their internal conditions to maintain stability is called ____.

Evolution

Homeostasis

Adaptation

26 / 40

The process by which nitrates are converted into nitrogen gas and released back into the atmosphere is ____.

Ammonification

Denitrification

Nitrification

27 / 40

The role an organism plays in its ecosystem, including its interactions with other organisms, is its ____.

Habitat

Biome

Ecological niche

28 / 40

The total amount of living matter within a given trophic level in an ecosystem is called ____.

Biodiversity

Biome

Biomass

29 / 40

The term "biome" refers to ____.

A single ecosystem

A large geographical region defined by its climate and vegetation

A specific habitat of a species

30 / 40

The term "biodiversity hotspot" refers to areas that ____.

Have high species diversity and are threatened

Are important for fossil preservation

Are common habitats for migratory species

31 / 40

The zone where freshwater meets saltwater is called ____.

Estuary

Wetland

Intertidal zone

32 / 40

The zone in the ocean where photosynthesis can occur is called the ____.

Photic zone

Hadal zone

Aphotic zone

33 / 40

The process by which phosphorus is cycled through ecosystems is called ____.

Carbon cycle

Phosphorus cycle

Nitrogen cycle

34 / 40

The biome characterized by low temperatures, little precipitation, and treeless plains is the ____.

Savanna

Tundra

Desert

35 / 40

The term "ecosystem" refers to ____.

A community of organisms and their physical environment

A single species and its habitat

A group of interacting organisms

36 / 40

Which of the following is NOT a component of the nitrogen cycle?

Photosynthesis

Nitrification

Denitrification

37 / 40

The process by which nutrients are transferred between trophic levels in an ecosystem is called ____.

Energy flow

Nutrient cycling

Biomagnification

38 / 40

The term "ecosystem services" refers to ____.

Species interactions

Benefits humans derive from ecosystems

Threats to ecosystems

39 / 40

Which of the following is a primary producer in a terrestrial ecosystem?

Deer

Grass

Wolf

40 / 40

Which of the following is an example of a keystone species?

Seagull

Sea otter

Starfish

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adminJune 13, 2024Last Updated: October 14, 2024

0 7 2 minutes read