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4 marksRespiration

CSEC Biology · May/June 2018 · Paper 2 · Question 4(b)

State TWO characteristics that the respiratory surface used for gaseous exchange in human beings has in common with the respiratory surface used in flowering plants. Explain how EACH characteristic makes the respiratory surface suitable for gaseous exchange.

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Other parts of this question

  1. 4(a)Name the parts labelled A, B, C, D, E and F in the space provided.[6 marks]
  2. 4(c)(i)Outline the effects of THREE named components of cigarette smoke, other than nicotine, on the human body.[3 marks]
  3. 4(c)(ii)Outline TWO ways in which the use of nicotine in electronic cigarettes may be harmful to the human body.[2 marks]

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