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Question 18M.1.HL.TZ2.30

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.1.HL.TZ2.30
Level HL Paper 1 Time zone TZ2
Command term Question number 30 Adapted from N/A
30.
[Maximum mark: 1]
18M.1.HL.TZ2.30

The image shows seedlings that have been exposed to unidirectional light.

[Source: The Micro Gardener (https://themicrogardener.com/prevent-fix-leggy-seedlings/)]

Which statement explains the growth towards the light source?

A. Light causes auxin to inhibit cell division in the shoot meristem.

B. Light causes auxin to promote cell division in the shoot meristem.

C. Auxin is concentrated in the side of the shoot with light and inhibits cell elongation.

D. Auxin is concentrated in the side of the shoot without light and promotes cell elongation.

[1]

Markscheme

D

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