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6 marksTransport in the Phloem

CAPE Biology Unit 2 · 2008 (T&T) · Paper 2 · Question 2(a)(i)

A diagram illustrating the mass pressure-flow hypothesis in phloem translocation is provided.

With reference to the activities occurring at stages I to IV, discuss the six key features of the mass pressure-flow hypothesis.

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Other parts of this question

  1. 2(a)(ii)Describe one major difference between xylem and phloem transport processes in plants.[2 marks]
  2. 2(b)(i)Illustrate and label the main chambers of the mammalian heart in longitudinal section.[4 marks]
  3. 2(b)(ii)Use arrows on your drawing to illustrate the circuit of blood flow through the chambers of the heart.[1 mark]
  4. 2(b)(iii)Identify which chamber of the heart plays the most important role in pumping, and describe its main structural feature contributing to this function.[2 marks]

More practice: the rest of this paper · more Transport in the Phloem questions · all CAPE Biology Unit 2 past papers