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2 marksThe Circulatory System of Mammals

CAPE Biology Unit 2 · 2015 · Paper 2 · Question 2(c)(ii)

Figure 3 shows a plan drawing of a cross section of a major mammalian artery displaying tissue layer distribution.

With reference to the structural features in Figure 3, explain how an artery is able to withstand high blood pressure pumped from the heart.

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Other parts of this question

  1. 2(a)(i)On Figure 2, use an arrow labelled X to indicate the position where a leafy shoot is placed in the potometer.[1 mark]
  2. 2(a)(ii)Outline the key steps for determining the rate of transpiration using the potometer shown in Figure 2. Note: Setting up apparatus details are not required.[3 marks]
  3. 2(b)With reference to FOUR structural features, explain how xylem tissue is designed to facilitate water transport. (Do not define transpiration or explain the…[4 marks]
  4. 2(c)(i)In the region highlighted by Box A on Figure 3, draw cellular details of the tissue layers.[4 marks]
  5. 2(c)(iii)State ONE major difference that would be observed if a plan drawing of a vein's cross section were examined.[1 mark]

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