DP Biology (first assessment 2025)

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Question 19M.2.SL.TZ1.17a.i

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Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.2.SL.TZ1.17a.i
Level SL Paper 2 Time zone TZ1
Command term Outline Question number a.i Adapted from N/A
a.i.
[Maximum mark: 2]
19M.2.SL.TZ1.17a.i
(a.i)

Outline the changes of distribution of the grey squirrel from 1945 to 2010.

[2]

Markscheme

a. overall the grey squirrel distribution has increased «and the red squirrel decreased» ✔

b. in 2010 the grey squirrel was found in areas where it was previously not found ✔

c. grey squirrel has dominated/red squirrel virtually eliminated ✔

OWTTE

Examiners report

While most candidates were able to achieve a mark by noting that the grey squirrel “dominated” in the second map, students again lost marks due to an inability to communicate concepts clearly. A large number of students confused distribution with population size, an idea not addressed in the maps.

Syllabus sections