Assertion : Tropical latitudes have greater biological diversity then temperate latitudes.
Reason : Tropical regions remain relatively undisturbed for millions of years.
Reason : Tropical regions remain relatively undisturbed for millions of years.
Answer & explanation
Correct answer: option 1
Tropical latitudes have greater biological diversity. It is true. A forest in a tropical region like Equator has up to 10 times as many species of vascular plants as a forest of equal area in a temperate region like the Midwest of the USA. Speciation is generally a function of time and unlike temperate regions, subjected to frequent glaciations. In the past, tropical latitudes remained undisturbed for millions of years, where species continued to flourish.