Ecosystems and Biodiversity MCQs with Answers

adminJune 13, 2024Last Updated: October 14, 2024

0 6 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 relationship between plants and mycorrhizal fungi is an example of ____.

Parasitism

Commensalism

Mutualism

2 / 40

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

Nitrogen fixation

Carbon fixation

Photosynthesis

3 / 40

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

Predators

Decomposers

Temperature

4 / 40

The zone where freshwater meets saltwater is called ____.

Estuary

Intertidal zone

Wetland

5 / 40

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

Denitrification

Photosynthesis

Nitrification

6 / 40

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

Are important for fossil preservation

Have high species diversity and are threatened

Are common habitats for migratory species

7 / 40

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

Migration

Immigration

Emigration

8 / 40

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

Niche

Habitat

Range

9 / 40

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

Abyssal zone

Photic zone

Hadal zone

10 / 40

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

Water fixation

Carbon fixation

Nitrogen fixation

11 / 40

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

Nutrient cycling

Energy flow

Biomagnification

12 / 40

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

Seagull

Sea otter

Starfish

13 / 40

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

Air pollution

Water filtration

Timber production

14 / 40

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

Tundra

Savanna

Desert

15 / 40

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

Temperate deciduous forest

Desert

Grassland

16 / 40

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

Secondary succession

Tertiary succession

Primary succession

17 / 40

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

Herbivore

Carnivore

Fungi

18 / 40

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

Desert

Tropical rainforest

Tundra

19 / 40

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

Commensalism

Parasitism

Mutualism

20 / 40

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

Habitat

Biome

Ecological niche

21 / 40

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

Species dominance

Species richness

Species evenness

22 / 40

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

Evaporation

Precipitation

Condensation

23 / 40

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

Taiga

Chaparral

Savanna

24 / 40

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

Aphotic zone

Photic zone

Hadal zone

25 / 40

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

Grassland

Tundra

Rainforest

26 / 40

The term "biome" refers to ____.

A single ecosystem

A specific habitat of a species

A large geographical region defined by its climate and vegetation

27 / 40

The term "ecosystem services" refers to ____.

Threats to ecosystems

Species interactions

Benefits humans derive from ecosystems

28 / 40

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

Carbon cycle

Water cycle

Nitrogen cycle

29 / 40

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

Water cycle

Carbon cycle

Nitrogen cycle

30 / 40

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

Nitrification

Denitrification

Ammonification

31 / 40

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

Evaporation

Transpiration

Respiration

32 / 40

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

Biomass

Biodiversity

Biome

33 / 40

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

Ecology

Genetics

Biogeography

34 / 40

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

Phosphorus cycle

Nitrogen cycle

Carbon cycle

35 / 40

A keystone species is one that ____.

Is endemic to a specific area

Has a disproportionately large impact on its ecosystem

Is a primary producer

36 / 40

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

Deer

Grass

Wolf

37 / 40

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

Biodiversity

Biogeography

Biomass

38 / 40

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

Pyramid of biomass

Pyramid of energy

Pyramid of numbers

39 / 40

The term "ecosystem" refers to ____.

A group of interacting organisms

A single species and its habitat

A community of organisms and their physical environment

40 / 40

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

Homeostasis

Evolution

Adaptation

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adminJune 13, 2024Last Updated: October 14, 2024

0 6 2 minutes read