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EnglandBiologyQuick questions
3.3 Organisms exchange substances with their environment
Quick questions on Xylem cohesion-tension and phloem mass flow - AQA A-Level Biology 3.3
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
Explain the roles of cohesion and adhesion in moving water up the xylem. [2 marks]
What is q2?Show answer
Describe how a potometer could be used to investigate the effect of wind speed on transpiration rate. [3 marks]
What is q3?Show answer
Explain how sucrose is loaded into the phloem at a source and how this drives mass flow. [4 marks]
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