DP Biology (first assessment 2025)
Question 19M.1B.SL.TZ2.d
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1B.SL.TZ2.d |
| Level | SL | Paper | 1B | Time zone | TZ2 |
| Command term | State | Question number | d | Adapted from | N/A |
d.
[Maximum mark: 1]
19M.1B.SL.TZ2.d
State one abiotic factor that could have determined the distribution of barnacles.
[1]
Markscheme
a. exposure/tides/waves ✔
b. temperature ✔
c. surfaces «of attachment» ✔
d. resource availability/nutrients ✔
e. pH ✔
f. light ✔
g. salinity ✔
Do not accept biotic factors eg: “competition or predation”
