Exam-style Questions: Evolution

  1. Charles Darwin was famous for his "natural selection" theory. Jean Baptiste de Lamarck had a different idea - that plants and animals evolve features according to how much they use or need them.

    What experiment / findings disproved Lamarck's idea?

    (Marks available: 2)

    Answer

    Answer outline and marking scheme for question: 1

    When mice that had their tails cut off, they still gave birth to baby mice with tails.

    (Total = 2 marks)

  2. Name 3 causes of extinction.

    (Marks available: 3)

    Answer

    Answer outline and marking scheme for question: 2

    • A rapid environmental change to which they cannot adapt to (i.e. food / industry).
    • A new threat (i.e. new predator / disease).
    • Failure to compete successfully against new species.

    (Total = 3 marks)

  3. Give the main pro and con of a mutation in an organism.

    (Marks available: 2)

    Answer

    Answer outline and marking scheme for question: 3

    Pro: Can give the organism a better chance of survival.

    Con: Can give rise to things like inherited diseases.

    (Total = 2 marks)