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4 marksNutrition in Living Organisms

CSEC Biology · January 2021 · Paper 2 · Question 2(a)(i)

Structure and function of a flowering plant leaf and factors affecting photosynthesis.

Name the structures labelled A, B, C and D on Figure 2.

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Other parts of this question

  1. 2(a)(ii)Suggest ONE way in which photosynthesis would be affected if ALL of the air spaces in the leaf of the flowering plant were filled with cells.[1 mark]
  2. 2(b)List THREE ways in which the leaf of a plant is adapted for photosynthesis.[3 marks]
  3. 2(c)(i)State if there is any difference between the function of plant chromosomes and the function of animal chromosomes.[1 mark]
  4. 2(c)(ii)State ONE reason for your answer in (c)(i).[1 mark]
  5. 2(d)(i)Describe the region of the line of the graph labelled A in Figure 3.[1 mark]
  6. 2(d)(ii)Use the principles of photosynthesis to suggest ONE reason for the shape of the graph in the region A.[1 mark]
  7. 2(d)(iii)Describe the region of the line of the graph labelled A-B in Figure 3.[1 mark]
  8. 2(e)Despite the increase in the global concentrations of atmospheric carbon dioxide, there is no corresponding increase in the rate of photosynthesis in flowering…[2 marks]

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