Practice Natural Selection (D4.1) - Theme D: Continuity and Change - IB 11 Biology
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Natural Selection

Practice - Natural Selection

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Practice Questions

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Question 1 Easy

What is natural selection?

💡 Hint: Think about traits that help survive in an environment.

Question 2 Easy

Name one condition necessary for natural selection to occur.

💡 Hint: What does it mean for individuals to have different traits?

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the main mechanism of evolution discussed in this section?

Mutation
Natural Selection
Gene Flow
Genetic Drift

💡 Hint: Think about the process that explains the survival and reproduction of individuals with favorable traits.

Question 2

True or False: Stabilizing selection increases variation in a population.

True
False

💡 Hint: Consider what happens to extreme traits in this type of selection.

1 more question available

Challenge Problems

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Challenge 1 Hard

Given a population of mice, some have light fur and some have dark. Suppose an environmental change makes the habitat darker. Predict the changes in fur color over the next generations and why that might happen.

💡 Hint: Think about how the environment interacts with trait visibility and predation.

Challenge 2 Hard

You observe a population of butterflies that exhibit a range of wing patterns. If butterflies with intermediate patterns are more successful in avoiding predators, describe how you would expect the allele frequencies to change over time.

💡 Hint: Focus on how selection affects population traits over time!

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