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1 markPhotosynthesis and ATP Synthesis

CAPE Biology Unit 2 · 2011 · Paper 2 · Question 1(a)(iii)

A photomicrograph showing a transverse cross-section of a typical dicotyledonous leaf is provided.

Given that the photomicrograph in Figure 1 is magnified 150 times, calculate the actual width of the specimen from Y1 to Y2.

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Other parts of this question

  1. 1(a)(i)Identify the structures labelled A, B, C, and D in Figure 1.[4 marks]
  2. 1(a)(ii)Make a detailed drawing showing the cellular organization of the region highlighted by Box X in Figure 1, at two times the actual size of Box X (no labels…[5 marks]
  3. 1(b)(i)Define the term 'biological pyramid'.[2 marks]
  4. 1(b)(ii)Identify the type of biological pyramid shown in Figure 2.[1 mark]
  5. 1(b)(iii)Briefly explain the significance of the numerical values given in Figure 2.[2 marks]

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