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Evolution

5 Class 12 Biology questions with answers and explanations.

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All questions with answers
  1. The theory of natural selection was proposed by:

    • 1 Pasteur
    • 2 Lamarck
    • 3 Darwin
    • 4 Mendel
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    Correct answer: Darwin

    Charles Darwin and Alfred Russel Wallace.

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  2. Fossils give evidence of:

    • 1 Past life
    • 2 Future species
    • 3 Only climate
    • 4 Only plants
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    Correct answer: Past life

    They record organisms that lived long ago.

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  3. Similar bone structures in the arms of humans and the wings of bats are called:

    • 1 Homologous structures
    • 2 Analogous structures
    • 3 Mutations
    • 4 Vestigial structures
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    Correct answer: Homologous structures

    They share a common ancestry.

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  4. A random change in DNA is a:

    • 1 Selection
    • 2 Migration
    • 3 Adaptation
    • 4 Mutation
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    Correct answer: Mutation

    Mutations are a source of new variation.

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  5. Antibiotic resistance in bacteria is an example of:

    • 1 Natural selection
    • 2 Extinction
    • 3 Fossil evidence
    • 4 Artificial selection
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    Correct answer: Natural selection

    Resistant bacteria survive and multiply.

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