DP Biology (first assessment 2025)

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Question 19M.2.HL.TZ2.a

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Date May 2019 Marks available [Maximum mark: 2] Reference code 19M.2.HL.TZ2.a
Level HL Paper 2 Time zone TZ2
Command term Identify Question number a Adapted from N/A
a.
[Maximum mark: 2]
19M.2.HL.TZ2.a

The graph shows blood pressure changes on the left side of the heart during one heartbeat. Identify the two parts of the circulatory system that produce traces I and II on the graph.

[Source: © International Baccalaureate Organization 2019]

[2]

Markscheme

I. aorta ✔

II: «left» atrium ✔

Examiners report

This question was poorly answered with most students earning either one mark or no marks. It was more common for candidates to correctly identify the atrium rather than the aorta. ß

Syllabus sections