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3 marksThe Circulatory System of Mammals

CAPE Biology Unit 2 · 2007 · Paper 2 · Question 2(a)(i)

Figure 3(a) shows a longitudinal section of part of the heart wall under a microscope slide, and Figure 3(b) shows the structure of the heart.

Make a plan drawing (without drawing individual cells) in outline of the structures shown in Figure 3(a) at a magnification of x1.

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Other parts of this question

  1. 2(a)(ii)Using a ruled square or rectangle, indicate on Figure 3(b) the location corresponding to the drawing provided in (a)(i).[1 mark]
  2. 2(b)(i)Identify each of the structures marked A, B, C, and D on Figure 3(a).[2 marks]
  3. 2(b)(ii)Identify the areas labelled E and F on Figure 3(a).[1 mark]
  4. 2(c)State the width of the wall at G as a proportion of the wall width at H.[1 mark]
  5. 2(d)Give a reason for the difference in wall width between G and H.[2 marks]

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