DP Biology (first assessment 2025)

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Question 22M.1A.HL.TZ2.33

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.HL.TZ2.33
Level HL Paper 1A Time zone TZ2
Command term Question number 33 Adapted from N/A
33.
[Maximum mark: 1]
22M.1A.HL.TZ2.33

The picture shows lentils sprouts growing towards a light source from the left.

[Source: Russell Neches, Lentil sprouts reaching for the sun [image online] Available at https://www.flickr.com/photos/rneches/2081938105/ This file is licensed under
the Creative Commons Attribution 2.0 Generic (CC BY 2.0)
https://creativecommons.org/licenses/by/2.0/.]

 

How has this response been brought about?

A. A higher concentration of auxins on the light side caused faster photosynthesis.

B. A higher concentration of auxins on the shaded side caused faster meiosis.

C. A higher concentration of auxins on the shaded side caused faster cell elongation.

D. A higher concentration of chloroplasts on the light side allowed for more photosynthesis.

[1]

Markscheme

C

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