Multiple Choice
Which best describes biogeographic isolation?
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48. Ecology
Biogeography
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Which best describes biogeographic isolation?
A
The physical separation of populations by geographic barriers, leading to limited gene flow between them.
B
The adaptation of organisms to similar environments in different parts of the world.
C
The migration of species across continents due to climate change.
D
The extinction of species caused by competition with invasive species.
Verified step by step guidance1
Understand the term 'biogeographic isolation': It refers to the physical separation of populations of the same species by geographic barriers such as mountains, rivers, or oceans, which restricts gene flow between the populations.
Analyze the first option: 'The physical separation of populations by geographic barriers, leading to limited gene flow between them.' This directly aligns with the definition of biogeographic isolation.
Evaluate the second option: 'The adaptation of organisms to similar environments in different parts of the world.' This describes convergent evolution, not biogeographic isolation.
Evaluate the third option: 'The migration of species across continents due to climate change.' While migration can occur, it does not describe the concept of biogeographic isolation.
Evaluate the fourth option: 'The extinction of species caused by competition with invasive species.' This describes competitive exclusion, not biogeographic isolation.
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