Practice Quiz

CLEP Natural Sciences - Biological Science - Question List

Select how would you like to study

Study Mode Free Daily Question Test Mode
31. In a population of moths, wing color became darker over time. Which of the following is the best evidence that the change in wing color was an evolutionary change?
  1. The size of the moth population changed.
  2. The average length of the moths’ dark wings increased.
  3. The number of eggs that females laid during each breeding season increased.
  4. The frequencies of the alleles for dark wing color in the moth population changed.
See answer
32. Leaves fall from deciduous trees in autumn. The carbon in these leaves is returned to the atmosphere through which of the following processes?
  1. condensation
  2. decomposition
  3. photosynthesis
  4. transpiration
See answer
33. Which of the following statements best explains why geographic isolation can lead to speciation?
  1. Physical separation of populations reduces competition for each group.
  2. Physical separation of populations prevents interbreeding and mixing of gene pools.
  3. Physical separation of populations provides more space for each group’s size to increase.
  4. Physical separation of populations stresses the organisms and causes mutations in their genetic code.
See answer
34. Emphysema is a severe respiratory system disease. The disease causes damage that directly prevents the transfer of oxygen to the bloodstream. Which part of the respiratory system does emphysema damage?
  1. alveoli
  2. bronchi
  3. larynx
  4. trachea
See answer
35. Every year, monarch butterflies from Canada and the United States spend the winter in central Mexico. The dry and mild climate in Mexico allows the monarch butterflies to survive the winter. One winter, a week of storms caused freezing temperatures and 43 cm of snow in Mexico. What was the most likely impact of these storms on the monarch butterflies?
  1. Monarch butterflies died in large numbers.
  2. Monarch butterflies immediately migrated back to the United States.
  3. Monarch butterflies did not migrate from Canada and the United States the next year.
  4. Monarch butterflies evolved several new adaptations to survive the winter in Mexico.
See answer

Select how would you like to study

Study Mode Free Daily Question Test Mode