Question

Which among the following statements explains why tropical regions have a richer biological diversity than other regions?

• A. Mass extinction of life forms in polar and sub-polar regions
• B. The only types of soil that are fertile enough for most of the plant species are found in the tropic region
• C. The tropical region of the earth is characterised by constant and stable climate which is easy for organisms to adapt to
• D. Organisms do not have enough food resources in the non-tropical regions on earth

Answer 1

Answer: (A), (C)

The tropical region of the earth is characterised by constant and stable climate which is easy for organisms to adapt to

Regions closer to the equator are usually rich in biological diversity and number of species. There are several theories that could explain such a sharp increase in diversity as compared to the polar and sub-polar region. A case of mass extinction in the polar regions could have snuffed out almost all life forms present in the area. Another theory is that the stable and constant climate of the tropical region is conducive to the survival of all life forms, thereby resulting in a higher number of species.