Question

According to Darwin, the organic evolution is due to

• A. Intraspecific competition
• B. Interspecific competition
• C. Competition within closely related species
• D. Reduced feeding efficiency in one species

Answer 1

The correct option is A Intraspecific competition

Intra-specific competition leads to evolution. Variations arise naturally in a growing population due to crossing over etc. Organisms with variation are better suited to their environment and are favored by natural selection, while less fitted ones are eliminated. Gradually this continued process of natural selection leads to evolution. The interspecific struggle also plays a role in evolution but the intraspecific struggle is more intense and prominent one.