Ecosystems and Biodiversity MCQs with Answers

adminJune 13, 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 term "biome" refers to ____.

A specific habitat of a species

A large geographical region defined by its climate and vegetation

A single ecosystem

2 / 40

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

Tundra

Desert

Savanna

3 / 40

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

Genetics

Ecology

Biogeography

4 / 40

The term "ecosystem services" refers to ____.

Benefits humans derive from ecosystems

Species interactions

Threats to ecosystems

5 / 40

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

Nitrogen cycle

Phosphorus cycle

Carbon cycle

6 / 40

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

Photosynthesis

Denitrification

Nitrification

7 / 40

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

Herbivore

Carnivore

Fungi

8 / 40

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

Evaporation

Condensation

Precipitation

9 / 40

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

Hadal zone

Photic zone

Abyssal zone

10 / 40

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

Biodiversity

Biome

Biomass

11 / 40

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

Grassland

Rainforest

Tundra

12 / 40

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

Taiga

Chaparral

Savanna

13 / 40

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

Nitrogen cycle

Carbon cycle

Water cycle

14 / 40

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

Starfish

Seagull

Sea otter

15 / 40

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

Biodiversity

Biogeography

Biomass

16 / 40

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

Respiration

Evaporation

Transpiration

17 / 40

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

Species evenness

Species richness

Species dominance

18 / 40

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

Nitrogen fixation

Carbon fixation

Water fixation

19 / 40

A keystone species is one that ____.

Is endemic to a specific area

Is a primary producer

Has a disproportionately large impact on its ecosystem

20 / 40

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

Mutualism

Commensalism

Parasitism

21 / 40

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

Habitat

Biome

Ecological niche

22 / 40

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

Habitat

Range

Niche

23 / 40

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

Nutrient cycling

Biomagnification

Energy flow

24 / 40

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

Temperature

Predators

Decomposers

25 / 40

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

Migration

Immigration

Emigration

26 / 40

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

Denitrification

Ammonification

Nitrification

27 / 40

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

Tertiary succession

Primary succession

Secondary succession

28 / 40

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

Water filtration

Air pollution

Timber production

29 / 40

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

Pyramid of energy

Pyramid of biomass

Pyramid of numbers

30 / 40

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

Grass

Wolf

Deer

31 / 40

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

Carbon cycle

Nitrogen cycle

Water cycle

32 / 40

The term "ecosystem" refers to ____.

A single species and its habitat

A group of interacting organisms

A community of organisms and their physical environment

33 / 40

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

Carbon fixation

Nitrogen fixation

Photosynthesis

34 / 40

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

Desert

Grassland

Temperate deciduous forest

35 / 40

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

Are important for fossil preservation

Are common habitats for migratory species

Have high species diversity and are threatened

36 / 40

The zone where freshwater meets saltwater is called ____.

Intertidal zone

Wetland

Estuary

37 / 40

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

Tundra

Tropical rainforest

Desert

38 / 40

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

Mutualism

Commensalism

Parasitism

39 / 40

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

Evolution

Homeostasis

Adaptation

40 / 40

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

Photic zone

Hadal zone

Aphotic zone

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adminJune 13, 2024

0 6 2 minutes read