DP Biology (last assessment 2024)
Question 19M.3.SL.TZ1.11c
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.3.SL.TZ1.11c |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | Suggest | Question number | c | Adapted from | N/A |
c.
[Maximum mark: 1]
19M.3.SL.TZ1.11c
The table shows the distribution of four coral reef species along a transect as a function of depth.
[Source: © International Baccalaureate Organization 2019]
(c)
Suggest one way in which depth may act as a limiting factor for coral.
[1]
Markscheme
low light levels/lower temperatures cannot support growth/metabolism ✔
Requires the explanation for the mark
Examiners report
The reduction in light or temperature with greater depth was recognized but not often linked to growth or photosynthesis.
