DP Biology (last assessment 2024)
Question 23M.3.HL.TZ2.18ai
| Date | May 2023 | Marks available | [Maximum mark: 1] | Reference code | 23M.3.HL.TZ2.18ai |
| Level | HL | Paper | 3 | Time zone | TZ2 |
| Command term | State | Question number | i | Adapted from | N/A |
i.
[Maximum mark: 1]
23M.3.HL.TZ2.18ai
(i)
State the relationship between DDE concentration and eggshell thickness.
[1]
Markscheme
the higher the DDE concentration, the lower the thickness/higher the thinning
OR
negative correlation/inverse relationship;
Accept vice versa.
Examiners report
It was generally easy for the vast majority to state the relationship between the DDE concentration and eggshell thickness.
