Island Biogeography MCQs with Answers

adminApril 6, 2024

0 17 2 minutes read

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

Island Biogeography is a fascinating field of study within ecology that examines the distribution and diversity of species on islands. This discipline provides crucial insights into the processes that shape biodiversity. Islands, due to their isolation, serve as natural laboratories where scientists can observe how species colonize new areas, adapt to unique environments, and evolve over time.

Key concepts in island biogeography include species richness, colonization, extinction, and equilibrium. Species richness refers to the number of different species present on an island. The theory, developed by Robert MacArthur and Edward O. Wilson, posits that the number of species on an island is a balance between the rates of colonization and extinction. Larger islands and those closer to the mainland typically have higher species richness because they are more accessible to new species and can support larger populations.

Factors such as island size, distance from the mainland, habitat diversity, and environmental stability significantly influence species diversity. Smaller, more isolated islands often have fewer species due to higher extinction rates and lower immigration rates. Additionally, habitat diversity within islands can provide more niches, supporting greater biodiversity.

Island Biogeography has profound implications for conservation biology. Understanding these dynamics helps in the creation of effective strategies for preserving endangered species and managing biodiversity hotspots. In a world facing rapid environmental changes, insights from island biogeography are vital for maintaining ecological balance and protecting natural habitats.

Island Biogeography Online Quiz

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

Test Name: Island Biogeography 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.

Island Biogeography

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1 / 40

How does the "target area effect" influence species colonization?

Distance has no effect

Smaller islands are more likely to be colonized

Larger islands are more likely to be colonized

2 / 40

Who developed the theory of island biogeography?

MacArthur and Wilson

Mayr and Simpson

Darwin and Wallace

3 / 40

Which term describes species found only on islands and nowhere else?

Cosmopolitan

Invasive

Endemic

4 / 40

What term describes the balance between species immigration and extinction?

Carrying capacity

Equilibrium

Saturation

5 / 40

What is a major threat to island biodiversity today?

Increased isolation

Increased immigration

Invasive species

6 / 40

Which factor increases the likelihood of species extinction on islands?

Large population size

Small population size

High immigration rates

7 / 40

What does the term "island biogeography" encompass?

Study of species interaction on islands

Study of species distribution on islands

Study of climate on islands

8 / 40

Which factor often leads to high levels of endemism on islands?

High immigration rates

Isolation

Large island size

9 / 40

How does geographic isolation contribute to the evolution of island species?

Promotes unique adaptations

Reduces genetic diversity

Has no effect

10 / 40

Which process explains the arrival of new species to islands?

Speciation

Extinction

Colonization

11 / 40

What is the term for species colonizing new islands?

Emigration

Endemism

Immigration

12 / 40

How does distance from the mainland affect species richness on islands?

Increases

Decreases

No effect

13 / 40

According to the theory, what happens to species richness as island size increases?

Stays the same

Increases

Decreases

14 / 40

What is a key factor in the extinction of island species?

High immigration rates

Limited resources

Abundant resources

15 / 40

What does "rescue effect" refer to in island biogeography?

High extinction rates

Limited colonization

Immigration preventing extinction

16 / 40

Which factor is crucial in determining species richness on islands?

Climate stability

Island size and distance from the mainland

Human activity

17 / 40

How does the theory of island biogeography explain species turnover?

Continuous immigration and extinction

Sporadic colonization

Permanent species settlement

18 / 40

What impact does human activity typically have on island ecosystems?

Decreases extinction rates

Increases extinction rates

No impact

19 / 40

Which term refers to the unique evolution of species on islands?

Island dwarfism

Endemism

Island gigantism

20 / 40

What is the primary cause of species extinction on small islands?

High immigration rates

Abundant resources

Limited resources

21 / 40

How does competition affect species diversity on islands?

No effect

Increases species diversity

Reduces species diversity

22 / 40

Which type of islands typically support the most species?

Small and far from the mainland

Large and close to the mainland

Large and isolated

23 / 40

What role do ecological niches play in island biogeography?

Limit species diversification

Promote species diversification

No role

24 / 40

Which term describes the evolution of similar species in different island habitats?

Convergent evolution

Parallel evolution

Divergent evolution

25 / 40

What effect does high habitat diversity have on islands?

Decreases species richness

Increases species richness

No effect

26 / 40

Which factor contributes to higher immigration rates on islands?

Small island size

Isolation

Proximity to the mainland

27 / 40

How does the size of an island typically affect its carrying capacity?

Smaller islands have higher carrying capacities

Larger islands have higher carrying capacities

No effect

28 / 40

What does "species-area relationship" refer to in island biogeography?

Less area supports more species

Area has no effect

More area supports more species

29 / 40

What does the theory of island biogeography primarily study?

Evolution of new species

Species richness on islands

Species adaptation

30 / 40

Which term describes the process by which new species evolve on islands?

Convergent evolution

Genetic drift

Adaptive radiation

31 / 40

Which concept explains the extinction of species on islands?

Extinction rates

Colonization rates

Evolution rates

32 / 40

What is the primary focus of the equilibrium theory of island biogeography?

Species adaptation

Island evolution

Balance of immigration and extinction

33 / 40

What role do larger islands play in species diversity according to the theory?

Support more species

Support fewer species

No significant role

34 / 40

Which factor is critical for maintaining high biodiversity on islands?

Habitat diversity

Uniform habitats

Limited resources

35 / 40

Which concept refers to the creation of new habitats on volcanic islands?

Genetic drift

Ecological isolation

Ecological succession

36 / 40

What is a common consequence of small population sizes on islands?

Inbreeding

High reproductive rates

Genetic diversity

37 / 40

What effect does low genetic diversity have on island species?

Increases extinction risk

Decreases extinction risk

No effect

38 / 40

What is the significance of habitat diversity on islands?

Decreases species richness

Increases species richness

No effect

39 / 40

How does isolation affect species on islands?

Has no effect

Increases species richness

Reduces species richness

40 / 40

How does climate change impact island biogeography?

Reduces species richness

Increases species richness

Alters habitats and species distribution

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adminApril 6, 2024

0 17 2 minutes read