Origin and Evolution of Life — Practice Quiz
Maharashtra Board · Class 12 · Biology
Try a 4-question quiz on Origin and Evolution of Life for Maharashtra Board Class 12 Biology: tap an answer to check it and see why.
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Quick Quiz: Origin and Evolution of Life
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Which theory states that life originated from non-living matter spontaneously?
Who conducted the famous spark-discharge experiment to support chemical evolution?
What is the term for catalytic RNA molecules discovered by Altman and Cech?
Which scientist proposed the mutation theory of evolution?
Sample Questions
According to Darwin's theory, which of the following are essential factors for natural selection? (Select all correct answers)
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Overproduction, Struggle for existence, Organic variations
Darwin's theory is based on five main postulates: overproduction, struggle for existence, organic variations, natural selection, and origin of new species. Inheritance of acquired characters is Lamarck's theory, not Darwin's.
The primitive atmosphere of Earth was rich in which gases?
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Methane (CH₄), Ammonia (NH₃), Water vapor (H₂O), Hydrogen sulfide (H₂S)
The primitive atmosphere was reducing in nature and contained methane, ammonia, water vapor, and hydrogen sulfide. It was devoid of free oxygen, which came later through photosynthesis.
The Hardy-Weinberg equilibrium states that gene frequencies remain constant when:
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Population is large, Mating is random, No mutations occur, Natural selection is absent
Hardy-Weinberg equilibrium requires a large population, random mating, no mutations, no natural selection, and no gene flow. Gene flow would change allele frequencies and disturb the equilibrium.
Archaeopteryx is considered a connecting link between:
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Reptiles and birds
Archaeopteryx shows both reptilian features (teeth, long tail, claws) and avian features (feathers, wings, beak), making it a connecting link between reptiles and birds.
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