Question

Which best describes biogeographic isolation?
It always leads to the formation of new species.
It cannot lead to evolution.
It is a mechanism for evolution.
It occurs only through geographic forces.

Answer 1

It occurs only through geographic forces.

Biogeographic isolation can be described as the separation of members of the same species through geographical or biological forces. The group includes species of organisms that can breed and can produce offspring that are also capable of breeding.

Answer 2

Biogeographic isolation is the physical separation of species in a population. Geographic isolation is caused by barriers or geographic forces.

The correct answer is:

Option D. It is a mechanism for evolution

It is explained as:

• Biogeography is defined as the study of a place or region where diverse flora and fauna are distributed.

• Biogeographic isolation is defined as the separation or isolation of the same species. It is a mechanism for evolution, in species that are isolated due to geographic forces.

• The biogeographic isolation results in the formation of new species, which are capable of breeding and reproducing.

• The biogeographic isolation can be due to natural calamities or human-made factors, which lead to evolution. The separation can be due to natural processes like the thrusting of the valley by glaciers, or rising of the sea to create islands, and so on.

Thus, geographic isolation is the mechanism of evolution in which species are separated due to natural accidents or by human activities.

Therefore, the correct answer is Option C.

To know more about biogeographic isolation, refer to the following link:

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