Dissect the provided specimen P (a female rabbit) in the usual way to expose the digestive system. (a) Draw a labelled diagram of the dissected specimen P showing six digestive organs. (b) Identify two precautions taken when cutting the abdominal skin. (c) State the roles of the caecum and large intestine in digestion.

1. Draw a labelled diagram of the dissected specimen P showing six digestive organs. (15 mk)
2. Identify two precautions taken when cutting the abdominal skin. (5 mk)
3. State the roles of the caecum and large intestine in digestion. (10 mk)

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You are provided with solution A. Carry out a biochemical food test: (a) Use appropriate reagents to test for food contents in solution A. Record results in this table: Food Tested | Procedure | Observation | Inference (b) Mention the importance of the food substances identified in human diet. (c) Explain the necessity of applying heat during the test for reducing sugar.

1. Use appropriate reagents to test for food contents in solution A. Record results in this table: Food Tested | Procedure | Observation | Inference (4 mk)
2. Mention the importance of the food substances identified in human diet. (3 mk)
3. Explain the necessity of applying heat during the test for reducing sugar. (3 mk)

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Observe specimens R, S and T. Then answer: (a) List two visible features placing specimen R in its correct kingdom. (b) Describe three adaptations of specimen T to arid conditions. (c) How does specimen S differ from specimen R in leaf venation and stem type? (d) Suggest three economic uses of specimen T.

1. List two visible features placing specimen R in its correct kingdom. (2 mk)
2. Describe three adaptations of specimen T to arid conditions. (3 mk)
3. How does specimen S differ from specimen R in leaf venation and stem type? (2 mk)
4. Suggest three economic uses of specimen T. (3 mk)

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