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प्रश्न
Explain the concept ‘survival of the fittest’.
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उत्तर
Survival of the fittest (Natural selection):
a. The organisms having favourable variations succeed in the struggle for existence.
b. The organisms with unfavourable variations are unfit to survive and they perish.
c. This means survival of the fittest.
d. Nature selects the organisms with favourable variations and these are fittest to survive, hence, the theory is known as Theory of Natural selection.
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संबंधित प्रश्न
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| Column I | Column II |
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| (3) Probable ancestor of birds | (c) Petrified remains of prehistoric life |
| (4) Charles Darwin | (d) Father of genetics |
| (5) Gregor Mendel | (e) Archaeopteryx |
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Evolution
Short answer question.
What is disruptive selection?
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Name any three types of premating isolating mechanisms.
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