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2 marksTransport Systems

CSEC Biology · May/June 2011 · Paper 2 · Question 1(a)(ii)

A student investigated transpiration using two celery stalks placed in dye. Flask A was in normal conditions, Flask B had warm air directed at it. The distance the dye travelled up each stalk was measured at 5-minute intervals over 30 minutes. The results are in Table 1.

Account for the differences in the shape of the line graphs for Stalks A and B.

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Other parts of this question

  1. 1(a)(i)On the grid provided on page 3, draw a line graph to represent the data shown in Table 1.[4 marks]
  2. 1(b)Write a suitable aim for this experiment.[2 marks]
  3. 1(c)Which flask represents the control in this investigation?[1 mark]
  4. 1(d)What conclusion can be drawn from this data?[2 marks]
  5. 1(e)Describe the physical processes involved in the movement of water from the soil into the plant roots, up the stem and out through the leaves.[4 marks]
  6. 1(f)Describe TWO ways in which the xylem is adapted for transporting water within a flowering plant.[2 marks]
  7. 1(g)Suggest THREE ways in which transpiration benefits plants.[3 marks]
  8. 1(h)Name a type of transport tissue, OTHER THAN xylem, found in flowering plants and state the composition of the fluid transported in this tissue.[2 marks]
  9. 1(i)Outline ONE difference and TWO similarities between the transport system of flowering plants and that of mammals.[3 marks]

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