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According to MacArthur and Wilson's equilibrium theory, which of the following is true?
- a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.
- b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.
- c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.
- d)More species are expected on all islands irrespective of their size and distance from the continent.
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
According to MacArthur and Wilson's equilibrium theory, which of the f...
Concept:
- Robert MacArthur and E. O. Wilson (1963, 1967) developed a comprehensive model to explain the process of succession on newly formed islands, where a gradual buildup of species proceeds from a sterile beginning.
- Their ideas are termed the theory of island biogeography.
Explanation:
Fig 1: Island biota size varies with distance from the source pool and island size
- MacArthur and Wilson’s theory of island biogeography suggests that species repeatedly arrive on an island and either thrive or become extinct.
- The number of species tends toward an equilibrium number that reflects a balance between the rate of immigration and the rate of extinction.
- The rate of immigration of new species is highest when no species are present on the island, so that each species that invades the island is a new species.
- As species accumulate, subsequent immigrants no longer represent new species.
- The rate of extinction is low at the time of first colonization, because few species are present and most have large population sizes.
- With the addition of new species, the population sizes of some species may happen to be smaller, so the probability of extinction of these species by chance alone increases.
- Species may continue to arrive and go extinct, but the number of species on the island remains the same.
- The strength of the island biogeography model was that it generated several falsifiable predictions:
1. The number of species should increase with increasing island size.
- This is also known as the species-area hypothesis.
- Extinction rates would be less on larger islands because population sizes would be larger and less susceptible to extinction
2. The number of species should decrease with increasing distance of the island from the mainland, or the source pool, the pool of species that is available to colonize the island.
- Immigration rates would be greater on islands near the source pool because species do not have as far to travel.
- This is also known as the species distance hypothesis.
3. The number of species on an island might remain the same, but the composition of the species should change continuously as new species colonize the island and others become extinct.
- The turnover of species should therefore be considerable.
hence the correct answer is option 1
Most Upvoted Answer
According to MacArthur and Wilson's equilibrium theory, which of the f...
Explanation:
MacArthur and Wilson's equilibrium theory:
- The equilibrium theory of island biogeography, proposed by Robert MacArthur and Edward O. Wilson, predicts the number of species on an island based on two main factors: island size and distance from the mainland.
Key point:
- According to the theory, larger islands and islands closer to the continent are expected to have more species than smaller and isolated islands.
Reasoning:
- Larger islands have more available habitats and resources, allowing for a greater diversity of species to inhabit the island.
- Islands closer to the mainland are more likely to receive colonists from the mainland, leading to a higher species richness compared to islands that are far away and more isolated.
Implications:
- This theory has important implications for conservation efforts, as it suggests that preserving larger islands and islands closer to the mainland is crucial for maintaining biodiversity.
In conclusion, option 'A' is correct based on MacArthur and Wilson's equilibrium theory, as larger islands and islands closer to the continent are expected to have more species than smaller and isolated islands.
MacArthur and Wilson's equilibrium theory:
- The equilibrium theory of island biogeography, proposed by Robert MacArthur and Edward O. Wilson, predicts the number of species on an island based on two main factors: island size and distance from the mainland.
Key point:
- According to the theory, larger islands and islands closer to the continent are expected to have more species than smaller and isolated islands.
Reasoning:
- Larger islands have more available habitats and resources, allowing for a greater diversity of species to inhabit the island.
- Islands closer to the mainland are more likely to receive colonists from the mainland, leading to a higher species richness compared to islands that are far away and more isolated.
Implications:
- This theory has important implications for conservation efforts, as it suggests that preserving larger islands and islands closer to the mainland is crucial for maintaining biodiversity.
In conclusion, option 'A' is correct based on MacArthur and Wilson's equilibrium theory, as larger islands and islands closer to the continent are expected to have more species than smaller and isolated islands.
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According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer?
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According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer?.
According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer?.
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According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice According to MacArthur and Wilson's equilibrium theory, which of the following is true?a)Larger islands and islands closer to continent are expected to have more species than smaller and isolated islands.b)Smaller islands and islands far from the continent are expected to have more species than larger and isolated islands.c)Smaller islands and islands closer to the continent are expected to have more species than far away smaller and isolated islands.d)More species are expected on all islands irrespective of their size and distance from the continent.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Software Development tests.
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