| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.SL.TZ2.23 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 2 |
| Command term | Identify | Question number | 23 | Adapted from | N/A |
Question
Which example provides evidence of evolution?
A. White wings of a peppered moth turn black in industrial areas.
B. Antibiotic resistant bacteria replace non-resistant bacteria over time.
C. Some Galapagos finches’ beaks become smaller during dry years.
D. Polar bears are found in warmer latitudes following global warming.
Markscheme
B
Examiners report
For some candidates it was difficult to interpret whether the question was testing changes in individuals or in populations, therefore getting the wrong answer.
