Island Biogeography MCQs with Answers

adminApril 6, 2024

0 24 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 one of the most exciting disciplines in ecology with respect to the distribution and diversity of organisms on the islands. It brings with it very relevant information related to the mechanisms of forming biodiversity. Islands being separated provide a natural laboratory for scientists to observe the patterns of colonization of species, adaptation to certain conditions of the environment, and the time-evolved changes.

Island biogeography makes use of species richness, colonization, extinction, and equilibrium.

Species richness is the number of different species on an island. A theory by Robert MacArthur and Edward O. Wilson states that the number of species on an island at any given time is in balance with colonization and extinction rates. Larger, more mainland-proximate islands tend to have higher species richness because they are nearer to new species and the populations that they can support tend to be larger.

All these factors-the size of an island, distance from the mainland, habitat diversity, and environmental stability-all play strong effects on biodiversity. Islands farther away from the mainland typically harbor fewer species due to greater extinction rates and often lower immigration rates. Habitat diversity of an island may also provide for more niches in behalf of more biodiversity. The implications of island biogeography are profoundly deep in terms of its impact on conservation biology. Understanding these dynamics will help fashion effective strategies to conserve threatened species and manage biodiversity hotspots. With environmental landscape change taking place at enhanced rates worldwide, information on island biogeography is especially valuable toward maintaining ecological balance and securing 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

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Island Biogeography

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1 / 40

Which concept explains the extinction of species on islands?

Evolution rates

Extinction rates

Colonization rates

2 / 40

What is a major threat to island biodiversity today?

Increased immigration

Invasive species

Increased isolation

3 / 40

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

Ecological succession

Ecological isolation

Genetic drift

4 / 40

Which type of islands typically support the most species?

Large and close to the mainland

Large and isolated

Small and far from the mainland

5 / 40

What term describes the balance between species immigration and extinction?

Carrying capacity

Saturation

Equilibrium

6 / 40

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

High extinction rates

Immigration preventing extinction

Limited colonization

7 / 40

What effect does high habitat diversity have on islands?

Decreases species richness

No effect

Increases species richness

8 / 40

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

High immigration rates

Isolation

Large island size

9 / 40

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

Limited resources

Abundant resources

High immigration rates

10 / 40

Which process explains the arrival of new species to islands?

Colonization

Speciation

Extinction

11 / 40

How does isolation affect species on islands?

Reduces species richness

Has no effect

Increases species richness

12 / 40

Who developed the theory of island biogeography?

Darwin and Wallace

Mayr and Simpson

MacArthur and Wilson

13 / 40

How does competition affect species diversity on islands?

Increases species diversity

No effect

Reduces species diversity

14 / 40

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

Support more species

No significant role

Support fewer species

15 / 40

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

Larger islands have higher carrying capacities

Smaller islands have higher carrying capacities

No effect

16 / 40

Which factor is critical for maintaining high biodiversity on islands?

Habitat diversity

Uniform habitats

Limited resources

17 / 40

What effect does low genetic diversity have on island species?

Increases extinction risk

No effect

Decreases extinction risk

18 / 40

What does the term "island biogeography" encompass?

Study of species distribution on islands

Study of species interaction on islands

Study of climate on islands

19 / 40

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

Parallel evolution

Convergent evolution

Divergent evolution

20 / 40

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

More area supports more species

Less area supports more species

Area has no effect

21 / 40

Which factor is crucial in determining species richness on islands?

Climate stability

Island size and distance from the mainland

Human activity

22 / 40

What role do ecological niches play in island biogeography?

No role

Limit species diversification

Promote species diversification

23 / 40

How does the theory of island biogeography explain species turnover?

Permanent species settlement

Continuous immigration and extinction

Sporadic colonization

24 / 40

Which factor contributes to higher immigration rates on islands?

Small island size

Proximity to the mainland

Isolation

25 / 40

Which factor increases the likelihood of species extinction on islands?

Large population size

High immigration rates

Small population size

26 / 40

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

Smaller islands are more likely to be colonized

Distance has no effect

Larger islands are more likely to be colonized

27 / 40

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

Species adaptation

Island evolution

Balance of immigration and extinction

28 / 40

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

Inbreeding

Genetic diversity

High reproductive rates

29 / 40

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

Increases

Decreases

Stays the same

30 / 40

How does climate change impact island biogeography?

Reduces species richness

Alters habitats and species distribution

Increases species richness

31 / 40

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

Adaptive radiation

Genetic drift

Convergent evolution

32 / 40

What does the theory of island biogeography primarily study?

Species richness on islands

Species adaptation

Evolution of new species

33 / 40

What impact does human activity typically have on island ecosystems?

Increases extinction rates

No impact

Decreases extinction rates

34 / 40

What is the term for species colonizing new islands?

Immigration

Emigration

Endemism

35 / 40

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

Island dwarfism

Island gigantism

Endemism

36 / 40

What is the significance of habitat diversity on islands?

No effect

Decreases species richness

Increases species richness

37 / 40

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

Endemic

Cosmopolitan

Invasive

38 / 40

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

Increases

Decreases

No effect

39 / 40

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

Abundant resources

Limited resources

High immigration rates

40 / 40

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

Has no effect

Promotes unique adaptations

Reduces genetic diversity

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adminApril 6, 2024

0 24 2 minutes read