| Date | May 2010 | Marks available | 1 | Reference code | 10M.1.SL.TZ1.22 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Determine | Question number | 22 | Adapted from | N/A |
Question
Which of the following are used as evidence for evolution?
I. Homologous structures
II. Selective breeding of domesticated animals
III. Overproduction of offspring
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
Markscheme
A
Examiners report
There were some complaints in the G2s about asking questions where candidates need to memorize data. This is not the case, as if a candidate understands that a pyramid of energy is showing energy per unit of surface in a period of time, the only possible answers are A and D. A candidate ought to know that the unit of time cannot be a second, so the only possible answer is A. Most candidates did answer correctly but many went for B.
