Unit 4 Lesson 1

Multiple Choice

What is the significance of mutations in the survival and evolution of species?

• Mutations always harm species and lead to extinction.

• Mutations create variation, which can help species adapt and survive.

• Mutations have no effect on species survival.

• Mutations only occur in extinct species.

Multiple Choice

Which of the following factors can disturb the stability of genetic variation in populations?

• Mutations, natural selection, migration, and environmental change

• Only mutations and migration

• Only natural selection and environmental change

• Only migration and mutations

Multiple Select

Which of the following are possible effects of mutations?

• Helpful

• Harmful

• Neutral

• All of the above

Fill in the Blank

Fill in the blank: A mutation is a change in ___ sequence.

Multiple Choice

What advantage did black peppered moths have in polluted urban areas during the 19th century?

• They blended in with soot-covered tree trunks, making them less visible to predators

• They were able to fly faster than lighter-coloured moths

• They reproduced more quickly due to increased food supply

• They migrated to rural areas

Multiple Choice

Which environmental change in the mid-20th century led to the resurgence of lighter-coloured peppered moths?

• Increase in air pollution

• Reduction in air pollution

• Decrease in lichen growth

• Increase in tree trunk darkness

Multiple Select

Which of the following are sources of genetic variation in a population?

• Mutations

• Sexual reproduction

• Gene shuffling during meiosis

• Environmental pollution

Fill in the Blank

Human variation includes differences in ___ and genetic characteristics among individuals.

Multiple Choice

What are the three main types of adaptations that help organisms survive and reproduce in their environment?

• Structural, Behavioral, Physiological

• Physical, Emotional, Genetic

• Inherited, Acquired, Learned

• Dominant, Recessive, Hybrid

Multiple Choice

Which of the following is an example of a structural adaptation?

• A camel storing fat in its hump

• An elephant having large ears to keep cool

• A bear hibernating in winter

• A bird migrating south for the winter

Multiple Choice

Which of the following statements about natural selection is correct?

• It was proposed by Gregor Mendel.

• It means all traits become more common in a population.

• It is the process where organisms with beneficial traits survive and reproduce more.

• It only applies to animals, not plants.

Multiple Select

Which of the following are principles of natural selection described by Charles Darwin?

• Overproduction

• Competition

• Mutations

• Selection=Survival of the Fittest

Multiple Choice

Which of the following observations did Darwin make during his visit to the Galápagos Islands?

• There was variation between members of the same species.

• All members of a species were identical.

• Species did not adapt to their environment.

• No new species were found.

Multiple Choice

Which of the following statements best describes the process of natural selection as shown in the diagram?

• Individuals with advantageous traits are more likely to survive and reproduce.

• All individuals in a population survive equally well.

• Traits do not affect survival or reproduction.

• Populations never change over time.

Multiple Select

Select all factors that can lead to extinction according to the lesson.

• Lack of survival traits for the environment

• Rapid environmental change

• Abundance of food resources

• Stable climate

Multiple Choice

Which of the following is the correct sequence describing how changes in organisms can lead to survival or extinction?

• Mutation → Variation → Adaptation → Natural Selection → Survival/Extinction

• Adaptation → Mutation → Variation → Natural Selection → Survival/Extinction

• Natural Selection → Variation → Mutation → Adaptation → Survival/Extinction

• Variation → Mutation → Adaptation → Survival/Extinction