Natural Selection Worksheet
Grade 12 Science worksheet covering key concepts of natural selection, including variation, adaptation, and the role of environmental pressures.
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Natural Selection Worksheet
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Read each question carefully and answer to the best of your ability. Provide detailed explanations where requested.
1. Which of the following is NOT a core principle of natural selection?
Variation in traits within a population
Inheritance of acquired characteristics
Differential survival and reproduction
Overproduction of offspring
2. An adaptation is best described as:
A sudden change in an organism's DNA
A trait that helps an organism survive and reproduce in its environment
The process by which new species arise
The movement of individuals into or out of a population
3. The struggle for existence among individuals in a population is often due to limited .
4. Individuals with advantageous traits are more likely to and , passing those traits to their offspring.
5. is the ultimate source of all genetic variation within a population.
6. Natural selection always leads to more complex and 'perfect' organisms.
True
False
7. Explain the concept of 'fitness' in the context of natural selection.
8. Observe the image of Darwin's finches below. How do the variations in their beak shapes demonstrate the principle of natural selection in response to different food sources?
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