Following figure shows McArthur and Wilson's equilibrium model of biota on a single island. In this figure, terms A, B, C and D in order are a)extinction, immigration, equilibrium number of species, size of species pool.b)immigration, extinction, equilibrium number of species, size of species pool.c)extinction, immigration, size of species pool, equilibrium number of species.d)immigration, extinction, size of species pool, equilibrium number of species.Correct answer is option 'B'. Can you explain this answer?

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Following figure shows McArthur and Wilson's equilibrium model of biota on a single island. In this figure, terms A, B, C and D in order are

a)
extinction, immigration, equilibrium number of species, size of species pool.
b)
immigration, extinction, equilibrium number of species, size of species pool.
c)
extinction, immigration, size of species pool, equilibrium number of species.
d)
immigration, extinction, size of species pool, equilibrium number of species.

Correct answer is option 'B'. Can you explain this answer?

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Following figure shows McArthur and Wilson's equilibrium model of biot...

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:
The theory of island biogeography

(a) The interaction of immigration rate and extinction rate produces an equilibrium number of species on an island, Sˆ,Sˆ varies from 0 species to P species, the total number in the species pool of colonists.

(b) In practice, the rate curves bend because some species immigrate more readily than others and because some species are better competitors than others

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As species accumulate, subsequent immigrants no longer represent new species.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.

hence the correct answer is option 2

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Following figure shows McArthur and Wilson's equilibrium model of biota on a single island. In this figure, terms A, B, C and D in order are a)extinction, immigration, equilibrium number of species, size of species pool.b)immigration, extinction, equilibrium number of species, size of species pool.c)extinction, immigration, size of species pool, equilibrium number of species.d)immigration, extinction, size of species pool, equilibrium number of species.Correct answer is option 'B'. Can you explain this answer?

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Following figure shows McArthur and Wilson's equilibrium model of biota on a single island. In this figure, terms A, B, C and D in order are a)extinction, immigration, equilibrium number of species, size of species pool.b)immigration, extinction, equilibrium number of species, size of species pool.c)extinction, immigration, size of species pool, equilibrium number of species.d)immigration, extinction, size of species pool, equilibrium number of species.Correct answer is option 'B'. 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 Following figure shows McArthur and Wilson's equilibrium model of biota on a single island. In this figure, terms A, B, C and D in order are a)extinction, immigration, equilibrium number of species, size of species pool.b)immigration, extinction, equilibrium number of species, size of species pool.c)extinction, immigration, size of species pool, equilibrium number of species.d)immigration, extinction, size of species pool, equilibrium number of species.Correct answer is option 'B'. 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 Following figure shows McArthur and Wilson's equilibrium model of biota on a single island. In this figure, terms A, B, C and D in order are a)extinction, immigration, equilibrium number of species, size of species pool.b)immigration, extinction, equilibrium number of species, size of species pool.c)extinction, immigration, size of species pool, equilibrium number of species.d)immigration, extinction, size of species pool, equilibrium number of species.Correct answer is option 'B'. Can you explain this answer?.

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