DP Biology (first assessment 2025)
Question 19M.2.SL.TZ2.2a
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.2.SL.TZ2.2a |
| Level | SL | Paper | 2 | Time zone | TZ2 |
| Command term | Identify | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
19M.2.SL.TZ2.2a
(a)
Identify the stage of mitosis labelled X in the image, giving a reason.
[Source: Copyright 2002, The Trustees of Indiana University]
[1]
Markscheme
telophase because the chromosomes/chromatids have reached the poles
OR
«late» anaphase as some chromosomes/chromatids are still moving/tails visible ✔
OWTTE
Examiners report
Most were able to correctly state (late) anaphase or telophase but did not give a reason as clearly asked. Many students seem to have excellent eyesight as they claimed to see that the chromosomes were unwinding and that the nuclear membranes had formed. Please encourage the students not to go beyond what can be seen.
