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प्रश्न
Give three hypotheses for explaining why tropics show greatest levels of species richness.
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उत्तर
Such hypotheses are as follows:
- Speciation is generally a function of time. Temperate regions have been subjected to repeated glaciation since ancient times, while tropical latitudes have been undisturbed for millions of years. Hence, there has been a longer time for species evolution and diversification.
- The tropical environment is different from the temperate environment and shows fewer seasonal changes. This stable environment has encouraged niche specialisation, which has led to greater species diversity.
- More solar energy is available in tropical regions, which leads to greater productivity, indirectly leading to more extraordinary biodiversity.
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संबंधित प्रश्न
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Tropical regions show greatest level of species richness because -
- Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification.
- Tropical environments are more seasonal.
- More solar energy is available in tropics.
- Constant environments promote niche specialization.
- Tropical environments are constant and predictable.
Choose the correct answer form the options given below:
