Latest News

Give three hypotheses for explaining why tropics show greatest levels of species richness.

7/8/2015 CBSE


 



Give three hypotheses for explaining why tropics show greatest levels of species
richness.






Answer :


There are three different hypotheses proposed by scientists for explaining
species richness in the tropics.



(1) Tropical
latitudes receive more solar energy than temperate regions, which leads to high
productivity and high species diversity.



(2) Tropical
regions have less seasonal variations and have a more or less constant
environment. This promotes the niche specialization and thus, high species
richness.



(3) Temperate
regions were subjected to glaciations during the ice age, while tropical regions
remained undisturbed which led to an increase in the species diversity in this
region.




Similar Post You May Like