Population growth is checked by which of the following?
Correct answer: D. Competition
- A. No competition
- B. No polymorphism
- C. Polymorphism
- D. Competition
Explanation
Competition is the correct answer because it serves as a natural mechanism for controlling population growth. When individuals compete for limited resources such as food, water, and habitat, only the most adapted survive and reproduce. This keeps the population in check and maintains ecological balance. In contrast, 'No competition' would lead to unregulated population expansion, while 'No polymorphism' and 'Polymorphism' relate to genetic diversity, affecting adaptability rather than directly regulating population growth.
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About Evolution
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
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