Question 19M.2.HL.TZ1.b
| Date | May 2019 | Marks available | [Maximum mark: 3] | Reference code | 19M.2.HL.TZ1.b |
| Level | HL | Paper | 2 | Time zone | TZ1 |
| Command term | Compare and contrast | Question number | b | Adapted from | N/A |
Compare and contrast the community structure within and outside the marine protected area.
[3]
compare:
a. all three species present in both
OR
richness is the same ✔
b. sea urchin numbers highest in both
OR
sea bream density less than sea urchin density in both ✔ Allow converse answer
c. all species numbers are affected by fishing ✔
contrast:
d. sea urchin population is greater outside the marine protected area ✔
e. reduction in sea bream/sea grass percent cover outside the marine protected area ✔
f. less species evenness outside the marine protected area ✔
There were nearly always at least two differences between the areas described but much less often a comparison, so three marks were not often awarded. Some candidates gave explanations rather than following the command term.
