DP Biology (first assessment 2025)

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Question 21N.1A.HL.TZ1.33

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.HL.TZ1.33
Level HL Paper 1A Time zone TZ1
Command term Question number 33 Adapted from N/A
33.
[Maximum mark: 1]
21N.1A.HL.TZ1.33

The diagram shows a plant shoot and the direction of the light which the shoot received.

[Source: USDA-NRCS PLANTS Database. Available at: https://commons.wikimedia.org/wiki/File:Alnus_seedling_drawing.png
[Accessed 30 November 2021].]

 

What are the direction of movement and the effect of auxin in the tip of a plant shoot when receiving light from one side?

[1]

Markscheme

C

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