Natural Selection Worksheet
Explore the principles of natural selection, adaptation, and evolution with this Grade 8 science worksheet.
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Natural Selection: Survival of the Fittest
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Read each question carefully and answer to the best of your ability. This worksheet will test your understanding of natural selection and its role in evolution.
1. Which scientist is credited with developing the theory of natural selection?
Gregor Mendel
Charles Darwin
Louis Pasteur
Rosalind Franklin
2. What is an adaptation?
A sudden change in an organism's DNA.
A trait that helps an organism survive and reproduce in its environment.
The process of organisms moving to a new habitat.
The extinction of a species.
3. Natural selection is the process by which organisms better adapted to their tend to survive and produce more offspring.
4. The variety of life within an ecosystem is known as .
5. Explain how the beaks of Darwin's finches are an example of natural selection.
6. All mutations are harmful to an organism.
True
False
7. Sexual reproduction increases genetic variation within a population.
True
False
Match each term with its definition.
8. Evolution
a. A group of individuals of the same species living in the same area.
9. Population
b. The process by which species change over time.
10. Variation
c. Differences among individuals within a species.
11. During the Industrial Revolution, pollution darkened tree trunks. Explain how this led to a change in the peppered moth population due to natural selection.
