DP Biology (first assessment 2025)

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Question 23M.1A.SL.TZ1.25

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.1A.SL.TZ1.25
Level SL Paper 1A Time zone TZ1
Command term Question number 25 Adapted from N/A
25.
[Maximum mark: 1]
23M.1A.SL.TZ1.25

The light micrograph shows the structure of blood vessels in a muscle.

[Source: Calvo, J.L., n.d. [image online] Available at: https://www.shutterstock.com/image-photo/muscular-artery-veinnervebundles-
surrounded-785176687 [Accessed 12 January 2022].]


Which blood vessel is shown by X?


A.  A vein

B.  An artery

C.  An arteriole

D.  A capillary

[1]

Markscheme

A

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