Multiple choice

Biological concept of species is mainly based on

  1. reproductive isolation

  2. morphological features only

  3. methods of reproduction only

  4. morphology and methods of reproduction

  5. -
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A Correct answer
Explanation

The biological species concept defines a species as members of population that actually or potentially interbreed in nature, not according to similarity of appearance. The mechanisms of reproductive isolation or hybridisation barriers are a collection of mechanisms, behaviours and physiological processes that prevent the members of two different species that cross or mate from producing offspring or which ensure that any offspring that may be produced are sterile.

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