Which factor most likely caused animals and plants in India to differ greatly from species in nearby Southeast Asia?
a. The species became separated by convergent evolution.
b. The climates of the two regions are similar.
c. India is in the process of separating from the rest of Asia.
d. India was a separate continent until 45 million years ago.

검증된 단계별 안내

Understand the concept of biogeography, which studies the distribution of species and ecosystems in geographic space and through geological time.

Recognize that geographic isolation is a key factor in the evolution of species. When land masses are separated, species on each land mass evolve independently.

Consider the geological history of India. India was once a separate landmass and only collided with Asia around 45 million years ago, which could lead to distinct evolutionary paths for species.

Evaluate the options given in the problem. Convergent evolution (option a) refers to different species evolving similar traits independently, which does not explain geographic separation. Similar climates (option b) would likely lead to similar species, not different ones. The process of separation (option c) is ongoing but does not explain historical differences.

Conclude that the historical separation of India as a separate continent (option d) is the most likely factor causing the distinct species differences between India and Southeast Asia.

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주요 개념

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Plate Tectonics

Plate tectonics is the theory explaining the movement of Earth's lithospheric plates. It accounts for the historical separation and collision of landmasses, such as India's drift from Gondwana and its eventual collision with Asia. This movement has led to distinct evolutionary paths for species on different continents.

Biogeography

Biogeography studies the distribution of species and ecosystems in geographic space and through geological time. It helps explain why species in India differ from those in Southeast Asia due to historical land separations and unique evolutionary pressures, resulting in distinct flora and fauna.

Evolutionary Isolation

Evolutionary isolation occurs when populations are geographically separated, leading to independent evolutionary paths. India's historical isolation as a separate continent allowed its species to evolve differently from those in Southeast Asia, resulting in significant biodiversity differences.