DP Biology (first assessment 2025)

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Question 20N.2.SL.TZ0.b

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Date November 2020 Marks available [Maximum mark: 2] Reference code 20N.2.SL.TZ0.b
Level SL Paper 2 Time zone TZ0
Command term Deduce Question number b Adapted from N/A
b.
[Maximum mark: 2]
20N.2.SL.TZ0.b

Deduce whether the pattern of cyanogenesis was the same in all of the areas around all four cities.

[2]

Markscheme

a. Toronto, NYC and Boston show same pattern/all show positive correlation/relationship/WTTE;

b. Montreal shows negative correlation/negative relationship/WTTE so is different;

Examiners report

Here candidates were expected to state that the four cities did not all show the same pattern, as three have a positive correlation, but the fourth city (Montreal) has a weak negative correlation. A few failed to include Toronto among the cities with a positive correlation and instead singled it out for showing a stronger correlation than the others.

Syllabus sections