Science 10 Quiz Q3 Part 2

Which of the following statements best explains how natural selection can lead to evolution over time?

• Organisms with beneficial traits are more likely to survive and reproduce.

• All organisms evolve at the same rate regardless of their environment.

• Evolution occurs only in response to environmental changes.

• Natural selection results in the immediate adaptation of all species.

In a population of rabbits, the fur color varies from white to brown. If a new predator that can easily spot white rabbits is introduced, what is the likely outcome for the rabbit population?

• The white rabbits will thrive and reproduce more.

• The brown rabbits will become more common over time.

• The population will become extinct.

• The fur color will change to adapt to the new predator.

A scientist observes that certain species of birds have developed different beak shapes based on their food sources. What concept does this observation best illustrate?

• Genetic drift

• Natural selection

• Sympatric speciation

• Convergent evolution

Which of the following factors is least likely to contribute to the extinction of a species?

• Habitat destruction

• Overhunting

• Genetic diversity

• Climate change

A population of fish in a lake has a high mutation rate. How might this affect the population's ability to adapt to environmental changes?

• It will decrease adaptability due to harmful mutations.

• It will increase adaptability by providing a wider range of traits.

• It will have no effect on adaptability.

• It will lead to immediate extinction.

Which of the following best describes the role of genetic variation in a population?

• It ensures all individuals are identical, increasing survival.

• It provides a pool of traits that may be beneficial for survival.

• It limits the potential for adaptation to new environments.

• It guarantees that all offspring will survive.

During a drought, a species of plant with deeper roots is more likely to survive than those with shallow roots. What process does this scenario exemplify?

• Artificial selection

• Natural selection

• Genetic drift

• Speciation

If a population of birds is separated by a mountain range, what type of speciation is likely to occur over time?

• Allopatric speciation

• Sympatric speciation

• Parapatric speciation

• Peripatric speciation

Which statement about ecosystems is most accurate?

• Ecosystems are static and do not change over time.

• Ecosystems consist only of living organisms.

• Ecosystems are dynamic and involve interactions between biotic and abiotic factors.

• Ecosystems are only affected by human activity.

If a new disease affects only a specific population of squirrels, what is the most likely outcome for that population?

• The population will thrive due to natural selection.

• The population will decrease if most individuals are susceptible.

• The population will remain unchanged.

• The population will increase due to the elimination of weak individuals.