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4 marksTransport Systems

CSEC Biology · May/June 2013 · Paper 2 · Question 1(e)(i)

In flowering plants, xylem vessels transport substances.

Draw and annotate a diagram to show how the following materials could be set up to investigate the rate at which water moves through the xylem vessels under TWO different conditions. Materials: 2 beakers, water, dye, stopwatch, fan, ruler, plants with transparent stems

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Other parts of this question

  1. 1(a)In the space below, construct a table using the data presented in Figure 1.[3 marks]
  2. 1(b)Suggest TWO causes of variation among members of the same species.[2 marks]
  3. 1(c)Explain how the type of variation shown in Table 1 differs from the type of variation represented by Figure 1.[4 marks]
  4. 1(d)(i)Name TWO substances that are transported by blood.[2 marks]
  5. 1(d)(ii)Explain how this will affect the ability of these three students to perform well in sports.[4 marks]
  6. 1(e)(ii)Write a suitable hypothesis for this investigation.[2 marks]
  7. 1(f)Relate the structure of xylem vessels to their role in the transport of water through plant stems.[4 marks]

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