Lamarckism (Grade 12 NSC Matric Life Sciences): Quizzes
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Practise the questions
10 questions from this quiz
Who was Jean-Baptiste Lamarck?
Who was Jean-Baptiste Lamarck?
A French naturalist (late 1700s-early 1800s)
What key idea did Lamarck propose about species?
What key idea did Lamarck propose about species?
Species were not fixed & could evolve
Which observation led Lamarck to develop his theory?
Which observation led Lamarck to develop his theory?
Living species differ from fossil records
According to the law of use & disuse, what happens to frequently used structures?
According to the law of use & disuse, what happens to frequently used structures?
They become larger & stronger next gen
What did the law of inheritance of acquired characteristics claim?
What did the law of inheritance of acquired characteristics claim?
Traits gained in life pass to offspring
How did Lamarck explain giraffe neck elongation?
How did Lamarck explain giraffe neck elongation?
Giraffes stretched necks; passed it on
What is the main flaw in Lamarck's theory?
What is the main flaw in Lamarck's theory?
Acquired characteristics can't be inherited
Why can't acquired traits be inherited?
Why can't acquired traits be inherited?
Physical changes don't alter genetic code
What was the historical importance of Lamarck's work?
What was the historical importance of Lamarck's work?
Challenged belief species were fixed
How did Lamarck's focus differ from Darwin's?
How did Lamarck's focus differ from Darwin's?
Individual effort vs natural selection