Question

Occurrence of endemic species in South America and Australia is due to `:`
A. these species have been extinct from other regions
B. continental separation
C. there is no terrestrial route to these places
D. retrogressive evolution

Answer 1

Correct Answer - B
Seas separating the continents form barriers to free intercontinental movement causing evolution of organisms independently in these continents leading to endemism. Endemic species are those species which are found in a restricted area of the world.