Transport in the Phloem · CAPE Biology Unit 2

37 past-paper questions on Transport in the Phloem, part of Biosystems Maintenance, from every CAPE Biology Unit 2 paper on Quelpr.

1. 2(b)(i)3 marks· Biology · Unit 2 Q2 2(b)(i)Explain how ONE structural feature of the companion cells enables them to carry out their role in sucrose transport.
2. 2(b)(i)2 marks· Biology · Unit 2 Q2 2(b)(i)Differentiate between the 'source' and 'sink' in relation to phloem transport.
3. 2(b)(ii)3 marks· Biology · Unit 2 Q2 2(b)(ii)A carrot is a taproot that can be used in vegetative propagation. Explain how a carrot can act both as a 'source' and a 'sink' at different times.
4. 2(b)(ii)3 marks· Biology · Unit 2 Q2 2(b)(ii)Explain how the sieve elements of the phloem are loaded with solutes against a concentration gradient.
5. 2(c)12 marks· Biology · Unit 2 Q2 2(c)Discuss the mass flow theory as a mechanism of sugar transport in the phloem. Your response must include the processes labelled 1-7 and the movement of substances as indicated by the arrows.
6. 2(a)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Name the cells labelled A in Figure 2.
7. 2(b)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Suggest the effect on the phloem if the cells labelled A in Figure 2 were killed.
8. 2(c)1 mark· CAPE Biology Unit 2 · 2004 · Paper 2Determine the average diameter of the pores in the sieve plate in Figure 2.
9. 7(a)10 marks· CAPE Biology Unit 2 · 2005 · Paper 2With specific reference to the cells, explain how the structure of phloem is related to its function.
10. 7(b)(i)2 marks· CAPE Biology Unit 2 · 2005 · Paper 2State concisely the pressure flow hypothesis, clearly distinguishing between a source and a sink.
11. 7(b)(ii)4 marks· CAPE Biology Unit 2 · 2005 · Paper 2Identify the sources and sinks in the bean seedling and in the sweet potato vine.
12. 2(c)(i)1 mark· CAPE Biology Unit 2 · 2008 (Rest of Region) · Paper 2Identify the structures labelled X, Y, and Z in Figure 4.
13. 2(c)(ii)3 marks· CAPE Biology Unit 2 · 2008 (Rest of Region) · Paper 2State how EACH of the structures X, Y, and Z is adapted to its function.
14. 2(a)(i)6 marks· CAPE Biology Unit 2 · 2008 (T&T) · Paper 2With reference to the activities occurring at stages I to IV, discuss the six key features of the mass pressure-flow hypothesis.
15. 2(a)(ii)2 marks· CAPE Biology Unit 2 · 2008 (T&T) · Paper 2Describe one major difference between xylem and phloem transport processes in plants.
16. 2(c)(i)1 mark· CAPE Biology Unit 2 · 2010 · Paper 2Identify the structures labelled X and Y in Figure 3.
17. 2(c)(ii)4 marks· CAPE Biology Unit 2 · 2010 · Paper 2Discuss TWO structural differences between the cells labelled X and Y and describe how, in spite of these differences, they function as a unit.
18. 2(c)(iii)1 mark· CAPE Biology Unit 2 · 2010 · Paper 2Name ONE route by which substances move from the chloroplast in leaves to the phloem.
19. Q181 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1The function of the companion cell in mature phloem tissue is to
20. Q191 mark · multiple choice· CAPE Biology Unit 2 · 2011 · Paper 1Item 19 refers to the following three-dimensional diagram of part of a plant stem. Which labelled part is living but lacks a nucleus?
21. 5(b)(i)2 marks· CAPE Biology Unit 2 · 2011 · Paper 2Briefly explain the term 'translocation' as applied to plants.
22. 5(b)(ii)5 marks· CAPE Biology Unit 2 · 2011 · Paper 2Outline the principle of mass flow and discuss, using TWO examples, experimental evidence in support of mass flow as a possible mechanism of translocation.
23. Q191 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Which labelled part is living but lacks a nucleus?
24. Q201 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1Which of the following statements is true according to the mass (pressure) flow hypothesis?
25. Q211 mark · multiple choice· CAPE Biology Unit 2 · 2012 · Paper 1The structure labelled X is
26. Q181 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1Item 18 refers to the following three-dimensional diagram of part of a plant stem. Which labelled part contains rough endoplasmic reticulum?
27. Q191 mark · multiple choice· CAPE Biology Unit 2 · 2013 · Paper 1Which of the following statements is true according to the mass (pressure) flow hypothesis?
28. Q181 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1The cell labelled I is a
29. Q191 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1Which of the following is NOT an indication of how Cell II is specially adapted to its function?
30. Q201 mark · multiple choice· CAPE Biology Unit 2 · 2014 · Paper 1Which of the following processes facilitates the loading of sugar into phloem vessels?
31. 5(a)(i)2 marks· CAPE Biology Unit 2 · 2014 · Paper 2Give a concise explanation of the term 'translocation' in plants.
32. 5(a)(ii)4 marks· CAPE Biology Unit 2 · 2014 · Paper 2Apple growers in Japan sometimes make a non-lethal spiral slash around the bark of trees destined for removal after the growing season. This practice makes the apples sweeter. With reference to the mass flow principle,…
33. Q181 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1Companion cells are connected to sieve tube elements by
34. Q191 mark · multiple choice· CAPE Biology Unit 2 · 2015 · Paper 1Which of the following statements is true according to the mass (pressure) flow hypothesis?
35. 2(a)(i)3 marks· CAPE Biology Unit 2 · 2018 · Paper 2In the space provided, draw and label a diagram of the TWO phloem cell types shown in Figure 2B.
36. 2(a)(ii)2 marks· CAPE Biology Unit 2 · 2018 · Paper 2Describe TWO features of EACH phloem cell type shown in Figure 2B.
37. 2(a)(iii)2 marks· CAPE Biology Unit 2 · 2018 · Paper 2State the major function of EACH of the TWO phloem cell types.