Ecosystems and Biodiversity MCQs with Answers

adminJune 13, 2024

0 5 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.

Ecosystems and biodiversity are intrinsically linked concepts that play vital roles in maintaining the health and stability of our planet. Ecosystems are dynamic networks of living organisms, including plants, animals, and microorganisms, interacting with their physical environments. These interactions support essential processes such as energy flow and nutrient cycling, which are crucial for sustaining life. Biodiversity, which refers to the variety of life within an ecosystem, enhances its resilience and productivity.

High biodiversity ensures that ecosystems can withstand and recover from disturbances such as natural disasters, climate change, and human activities. It provides a broader range of species that can perform various ecological functions, contributing to ecosystem services like pollination, water purification, and soil fertility. Forests, wetlands, grasslands, and oceans are examples of diverse ecosystems, each hosting a unique array of species that contribute to their functionality.

Human activities, including deforestation, pollution, and urbanization, pose significant threats to both ecosystems and biodiversity. These activities can lead to habitat loss, species extinction, and disrupted ecological processes. Conservation efforts are essential to protect and restore ecosystems, aiming to preserve biodiversity and promote sustainable practices. Initiatives such as protected areas, habitat restoration, and sustainable agriculture are critical in maintaining ecological balance and ensuring the long-term health of our planet.

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 phosphorus is cycled through ecosystems is called ____.

Nitrogen cycle

Carbon cycle

Phosphorus cycle

2 / 40

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

Species richness

Species dominance

Species evenness

3 / 40

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

Water cycle

Carbon cycle

Nitrogen cycle

4 / 40

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

Savanna

Chaparral

Taiga

5 / 40

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

Primary succession

Tertiary succession

Secondary succession

6 / 40

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

Biogeography

Genetics

Ecology

7 / 40

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

Precipitation

Evaporation

Condensation

8 / 40

The term "ecosystem services" refers to ____.

Benefits humans derive from ecosystems

Species interactions

Threats to ecosystems

9 / 40

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

Herbivore

Carnivore

Fungi

10 / 40

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

Evolution

Homeostasis

Adaptation

11 / 40

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

Habitat

Biome

Ecological niche

12 / 40

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

Emigration

Migration

Immigration

13 / 40

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

Tropical rainforest

Desert

Tundra

14 / 40

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

Photosynthesis

Nitrification

Denitrification

15 / 40

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

Tundra

Desert

Savanna

16 / 40

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

Biomass

Biogeography

Biodiversity

17 / 40

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

Biomass

Biodiversity

Biome

18 / 40

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

Aphotic zone

Photic zone

Hadal zone

19 / 40

The term "ecosystem" refers to ____.

A group of interacting organisms

A community of organisms and their physical environment

A single species and its habitat

20 / 40

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

Sea otter

Seagull

Starfish

21 / 40

The term "biome" refers to ____.

A specific habitat of a species

A single ecosystem

A large geographical region defined by its climate and vegetation

22 / 40

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

Nitrogen fixation

Carbon fixation

Water fixation

23 / 40

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

Range

Habitat

Niche

24 / 40

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

Tundra

Rainforest

Grassland

25 / 40

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

Grassland

Temperate deciduous forest

Desert

26 / 40

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

Wolf

Deer

Grass

27 / 40

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

Biomagnification

Energy flow

Nutrient cycling

28 / 40

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

Respiration

Transpiration

Evaporation

29 / 40

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

Water filtration

Timber production

Air pollution

30 / 40

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

Ammonification

Denitrification

Nitrification

31 / 40

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

Parasitism

Mutualism

Commensalism

32 / 40

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

Pyramid of numbers

Pyramid of biomass

Pyramid of energy

33 / 40

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

Carbon fixation

Nitrogen fixation

Photosynthesis

34 / 40

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

Commensalism

Mutualism

Parasitism

35 / 40

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

Hadal zone

Abyssal zone

Photic zone

36 / 40

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

Carbon cycle

Water cycle

Nitrogen cycle

37 / 40

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

Are common habitats for migratory species

Have high species diversity and are threatened

Are important for fossil preservation

38 / 40

The zone where freshwater meets saltwater is called ____.

Wetland

Estuary

Intertidal zone

39 / 40

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

Predators

Decomposers

Temperature

40 / 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

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adminJune 13, 2024

0 5 2 minutes read