Topic 7.1 & 7.2: Natural Selection and Change Over Time: Quiz

Which of the following best describes the process of artificial selection?

• The natural process by which organisms adapt to their environment over time.

• The human-driven process of breeding organisms to enhance desired traits.

• The random mutation of genes leading to new traits in a population.

• The process by which organisms with advantageous traits survive and reproduce.

How does genetic variation within a population contribute to natural selection?

• It decreases the likelihood of any individuals surviving environmental changes.

• It increases the probability that some individuals will survive and reproduce in changing environments.

• It ensures that all individuals in a population are identical.

• It prevents any changes in the population over time.

Which mathematical representation can be used to explain how natural selection affects trait distribution over time?

• A pie chart showing the distribution of traits in a single generation.

• A line graph showing changes in trait frequency across multiple generations.

• A bar graph comparing trait frequencies in different species.

• A scatter plot showing individual trait variations within a single generation.

Consider a population of beetles where some are green and some are brown. If the environment becomes predominantly brown, which of the following is most likely to occur over time?

• The green beetles will become more common.

• The brown beetles will become more common.

• The population will remain unchanged.

• Both green and brown beetles will become equally common.

Explain how selective breeding can lead to changes in a species over time.

• Selective breeding introduces new species into an ecosystem.

• Selective breeding allows humans to choose traits that are passed on to future generations.

• Selective breeding prevents any genetic variation within a species.

• Selective breeding causes species to become extinct.

Which of the following scenarios best illustrates the concept of adaptation by natural selection?

• A species of bird develops a new song that attracts more mates.

• A population of rabbits develops thicker fur in response to colder climates over several generations.

• A group of fish migrates to a new area with more food.

• A plant species is artificially selected to produce larger fruits.

What role does probability play in understanding natural selection?

• It determines the exact outcome of trait distribution in a population.

• It helps predict the likelihood of certain traits becoming more common in a population.

• It eliminates the need for evidence in studying natural selection.

• It ensures that all traits have an equal chance of being passed on.

How can mathematical models be used to predict the effects of natural selection on a population?

• By showing the immediate effects of environmental changes on a single organism.

• By illustrating the long-term changes in trait frequencies within a population.

• By proving that natural selection does not affect populations.

• By demonstrating that all traits are equally advantageous.

Which of the following is an example of a trait that might be selected for in a population due to environmental changes?

• Brightly colored feathers in a forest with many predators.

• Camouflage coloring in a desert environment.

• Large size in a habitat with limited food resources.

• Slow movement in a fast-paced environment.

Match the following

• Natural Selection

• 
• Diversity

• 
• Species

• 
• Development

• 
• Adaptation

•