FSC Biology MCQs

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The process that has transformed life on earth from its earliest forms to vast diversity is
A. Mutation B. Evolution
C. Migration D. Genetic drift
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[explanation]b[/explanation]
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Which scientist does not match his achievements
A. Lamarck published his theory of evolution B. Lyell published principles of geology
C. Malthus published essay on principle of population D. Cuvier published papers on inheritance
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[explanation]d[/explanation]
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What was the source of hydrogen for first photosynthetic organisms?
A. Water B. Hydrogen present in soil
C. Hydrogen sulphate D. Hydrogen sulphide
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[explanation]d[/explanation]
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Which statement is incorrect?
A. Homologous organs are functionally different but structurally alike B. Analogous organs are functionally different but structurally alike
C. Examples of homologous structures are arms of man, forelimb of cat, flipper of whale D. Examples of analogous structures are wings of bats, birds and insects
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[explanation]b[/explanation]
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[question]
In humans gill pouches have modified into
A. Nose B. Ear
C. Eustachian tubes D. External ear
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[explanation]c[/explanation]
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[question]
Natural selection can amplify or diminish variations that are
A. Non heritable B. Heritable
C. Both heritable and non heritable D. Acquired
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[explanation]b[/explanation]
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[question]
A group of populations that have the potential to interbreed in nature is
A. Genus B. Family
C. Species D. Community
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[explanation]c[/explanation]
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[question]
According to Hardy-Weinberg theorem, frequencies of alleles and genotypes in a population’s gene pool remain
A. Mobile B. Stationary
C. Constant D. Constant unless acted upon by agents other than sexual recombination
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[explanation]d[/explanation]
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[question]
Disturbance in the gene pool is created by
A. Emigration B. Immigration
C. Both a and b D. Panmigration
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[explanation]c[/explanation]
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[question]
Which of the following precesses had resulted in the production of different breeds of domestic dogs and pigeons?
A. Natural selection B. Cross breeding
C. Artificial selection D. Self breeding
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[explanation]c[/explanation]
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