Question
Tropical regions show greatest level of species richness because
A. Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification.
B. Tropical environments are more seasonal.
C. More solar energy is available in tropics.
D. Constant environments promote niche specialization.
E. Tropical environments are constant and predictable.
Choose the correct answer from the options given below.
Options
Solution
Sol. [Key Concept: Tropical species richness]
A, C, D and E describe explanations for tropical diversity: long evolutionary time with fewer major disturbances, greater solar energy and relatively predictable environments that promote niche specialisation. B is false because tropical environments are generally less seasonal than temperate environments. Hence, option (3).
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