Question

Species living in different geographical areas are called as

• A. Allochronic
• B. Allopatric
• C. Sympatric
• D. Siblings

Answer 1

The correct option is B Allopatric

Species that belong to same period are termed as synchronic species and those from different geological time period are termed as allochronic species; option A is incorrect as this grouping is done on the basis of time scale irrespective of their geographical distribution. Reproductive isolation brought about by geographical isolation creates allopatric species which are now present in different geographical regions this makes option B correct. Individuals of a population present in same geographical area are reproductively isolated by polyploidy and forms new species termed as sympatric species. This makes option C incorrect. Two morphologically identical species that do not interbreed are referred to as sibling species; for example Drosophila pseudobscula and D. persimilis are sibling species that do not interbreed. Option D is incorrect. Thus, the correct answer is option B.