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5 marksNutrition in Living Organisms

CSEC Biology · January 2015 · Paper 2 · Question 2(a)(i)

Figure 3 is a diagram of the human alimentary canal.

Identify the structures labelled I, II, III, IV and V in Figure 3. I: II: III: IV: V:

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Other parts of this question

  1. 2(a)(ii)Using the symbol, X, indicate on Figure 3, TWO places where protein digestion takes place.[2 marks]
  2. 2(a)(iii)Suggest TWO reasons why the locations indicated in (a)(ii) are suitable for protein digestion to take place.[2 marks]
  3. 2(a)(iv)Give TWO reasons why living organisms need protein.[2 marks]
  4. 2(b)(i)Briefly describe ONE route by which the nitrogen excreted from animals (in the form of urea) is made available to plants.[2 marks]
  5. 2(b)(ii)Suggest TWO signs of nitrogen deficiency in plants.[2 marks]

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