Question

Isolation of sympatric species population is not possible by which one of the following?

• A. Ethological barriers
• B. Geographical barriers
• C. Climatic barriers
• D. Habitat barriers

Answer 1

The correct option is B Geographical barriers

Sympatric speciation is the process through which new species evolve from a single ancestral species, while inhabiting the same geographic region. In evolutionary biology and biogeography, sympatric and sympatry are terms referring to organisms, whose ranges overlap or are even identical, so that they occur together at least in some places. If these organisms are closely related (e.g., sister species), such a distribution may be the result of sympatric speciation.

Sympatric speciation cannot be possible if geographic barrier exists. A geographical barrier can be a mountain range, a large canyon, a body of water, or large expanses of climatic differences (e.g., a desert).