| Date | November 2009 | Marks available | 1 | Reference code | 09N.1.SL.TZ0.12 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 12 | Adapted from | N/A |
Question
During reproduction in flowering plants an embryo sac is produced, containing one haploid nucleus. This haploid nucleus divides by mitosis three times. What is produced?
A. One diploid nucleus
B. Four diploid nuclei
C. Four haploid nuclei
D. Eight haploid nuclei
Markscheme
D
Examiners report
Although some teachers complained about the testing on plant reproduction in this question, it turned out to be a very good discriminator. There was no need to understand how a plant carries out mitosis, just the process of mitosis itself.
