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Question 4

From Biology HL Paper 2 (May 2025, TZ2)

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  1. The light micrograph shows xylem vessels.
Light micrograph showing a cross-section of xylem vessels, as referenced in Question 4.
Light micrograph showing a cross-section of xylem vessels, as referenced in Question 4.

(a) Outline two adaptations of xylem vessels for water transport. [2]

(b) Explain how water is transported from the soil to the leaves when high humidity prevents transpiration. [3]

Textbook topics in this question

Review the exact course sections assessed by each question part.

Mixed-topic question
4(a)8.2 Plant Transport
4(b)8.2 Plant Transport6.3 Water Potential and Osmotic Systems