DP Biology (first assessment 2025)

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Question 23M.1A.SL.TZ1.20

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.SL.TZ1.20
Level SL Paper 1A Time zone TZ1
Command term Question number 20 Adapted from N/A
20.
[Maximum mark: 1]
23M.1A.SL.TZ1.20

Which characteristic of the subclavian vein distinguishes it from the subclavian artery?

A.  Larger lumen

B.  Absence of valves

C.  Presence of pores

D.  Two layers of muscle

[1]

Markscheme

A

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