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1 markVariation, Natural Selection and Genetic Engineering

CSEC Human and Social Biology · January 2013 · Paper 2 · Question 1(c)(i)b)

Data showing the percentage of still-born babies delivered by mothers who smoke tobacco across different age groups.

Use the graph drawn in Figure 2 to describe the trend that occurs in mothers who are 30–59 years of age.

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Other parts of this question

  1. 1(a)(i)a)State ONE hormone produced by the testis.[1 mark]
  2. 1(a)(i)b)State ONE hormone produced by the ovary.[1 mark]
  3. 1(a)(ii)State ONE function of the hormone named in (i) a).[1 mark]
  4. 1(b)(i)Outline the function of the parts labelled 'placenta' and 'amnion'.[2 marks]
  5. 1(b)(ii)Label the umbilical cord on Figure 1.[1 mark]
  6. 1(c)(i)a)On the grid provided in Figure 2 on page 5, construct a bar graph of the data in Table 1.[3 marks]
  7. 1(c)(ii)Explain how smoking tobacco may lead to mothers delivering still-born babies.[2 marks]
  8. 1(c)(iii)Suggest THREE diseases that smoking tobacco may cause in adults.[3 marks]

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