DP Biology (first assessment 2025)
Question 19M.1B.SL.TZ2.12b
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.1B.SL.TZ2.12b |
| Level | SL | Paper | 1B | Time zone | TZ2 |
| Command term | Describe | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
19M.1B.SL.TZ2.12b
(b)
Describe the distribution of C. montagui and S. balanoides barnacles in Butter Lump Bay.
[2]
Markscheme
a. both species present throughout the range ✔
b. C. montagui has small number of individuals «throughout»
OR
C.montagui occupies «mostly» upper shore/intertidal zone
c. S. balanoides «mostly» occupies low tide area ✔
OR
S.balanoides has large number of individuals «throughout» ✔
OWTTE referring to maximum numbers at specific heights.
Examiners report
Candidates were able to describe the distributions of the barnacles very well in part (b).
