Evolution and Natural Selection Worksheet

Which statement best describes evolution?

• Change in an individual

• Change in a species over generations

• Change caused by weather

• Change due to physical training

Which of the following is required for natural selection to occur?

• Identical individuals

• Variation in traits

• Random survival

• No reproduction

Which is an example of a structural adaptation?

• Hibernation

• Camouflage coloration

• Hunting at night

• Sweating to cool down

A behavioural adaptation is best described as:

• A body part that helps survival

• An inherited or learned action

• A mutation in DNA

• A growth pattern

Physiological adaptation refers to:

• Internal functions that help survival

• Physical traits

• Learned behaviours

• Temporary changes

Darwin concluded that species vary globally because:

• Identical species live everywhere

• Similar environments produce similar adaptations

• Organisms never change

• Migration is rare

Darwin’s observation of finch beaks on Galápagos Islands demonstrates:

• Artificial selection

• Sexual selection

• Adaptation to different food sources

• Analogous structures

Which statement describes "survival of the fittest"?

• The strongest survive

• Those with the most helpful traits survive and reproduce

• The largest individuals survive

• Fitness means athletic ability

A population shifting toward one extreme phenotype illustrates:

• Stabilizing selection

• Disruptive selection

• Directional selection

• Sexual selection

When average phenotypes are favoured, this is:

• Directional selection

• Stabilizing selection

• Disruptive selection

• Artificial selection