DP Biology (first assessment 2025)

Test builder »

Question 22M.1A.HL.TZ2.32

Select a Test
Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.HL.TZ2.32
Level HL Paper 1A Time zone TZ2
Command term Question number 32 Adapted from N/A
32.
[Maximum mark: 1]
22M.1A.HL.TZ2.32

The diagram shows the longitudinal section of phloem tissue at a plant source.

 

What is a function of the structures labelled X?

A. To provide the companion cell with carbon dioxide

B. To provide the companion cell with glucose

C. To allow movement of sucrose into the sieve tube

D. To allow movement of starch into the sieve tube

[1]

Markscheme

C

Syllabus sections