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2 marksNutrition in Living Organisms

CSEC Biology · May/June 2009 · Paper 2 · Question 3(a)

Figure 4 shows the internal structure of a dicotyledonous leaf.

Name ONE function for which the leaf in Figure 4 is suited and suggest how it is BEST suited for that function.

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Other parts of this question

  1. 3(b)(i)Using THREE arrows only, show on Figure 4 the path of water diffusing from the leaf.[3 marks]
  2. 3(b)(ii)Identify the structures labelled 1 and 2. Structure 1: Structure 2:[2 marks]
  3. 3(b)(iii)Name ONE consequence to a herbaceous plant if there is temporary unavailability of water to replace the water lost from the leaves.[1 mark]
  4. 3(c)(i)Explain how water from the soil gets to the leaf in a plant.[3 marks]
  5. 3(c)(ii)Explain how any ONE structural feature of plant cells helps in transport in plants.[2 marks]
  6. 3(d)Explain why all the water taken up by the roots of a plant is NOT lost by evaporation from the leaves.[2 marks]

More practice: the rest of this paper · more Nutrition in Living Organisms questions · all CSEC Biology past papers