Dissect specimen T to expose the reproductive and excretory systems. (a) (i) Draw a well-labelled diagram showing two parts of the reproductive system and two of the excretory system. (ii) Label the position of the heart and crop on the diagram. (b) (i) State one function of each reproductive and excretory part drawn. (ii) Describe how waste is removed from the body of specimen T. (c) (i) Identify the sex of specimen T. (ii) Give three justifications based on observable features.

1. (i) Draw a well-labelled diagram showing two parts of the reproductive system and two of the excretory system. (ii) Label the position of the heart and crop on the diagram. (15 mk)
2. (i) State one function of each reproductive and excretory part drawn. (ii) Describe how waste is removed from the body of specimen T. (10 mk)
3. (i) Identify the sex of specimen T. (ii) Give three justifications based on observable features. (5 mk)

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You are given solutions V and W. (a) (i) Carry out food tests using iodine, Benedict’s, Biuret, and ethanol solutions. (ii) Complete the following table: Food Test Procedure Observation Inference (b) (i) Name the enzyme that digests the substance found in solution V. (ii) State the final product of digestion and where it is absorbed. (c) (i) What is the importance of each food substance to a growing child? (ii) Explain how temperature affects the biochemical test for reducing sugar.

1. (i) Carry out food tests using iodine, Benedict’s, Biuret, and ethanol solutions. (ii) Complete the following table: Food Test Procedure Observation Inference (4 mk)
2. (i) Name the enzyme that digests the substance found in solution V. (ii) State the final product of digestion and where it is absorbed. (3 mk)
3. (i) What is the importance of each food substance to a growing child? (ii) Explain how temperature affects the biochemical test for reducing sugar. (3 mk)

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Observe specimens X, Y and Z. (a) (i) List three observable similarities between Y and Z. (ii) List two features that distinguish X from both Y and Z. (b) (i) Explain three reasons why Y is classified in class Insecta. (ii) Describe two benefits of Y to crop production. (c) (i) Draw specimen Z and label five external structures. (ii) How do these structures assist in survival?

1. (i) List three observable similarities between Y and Z. (ii) List two features that distinguish X from both Y and Z. (4 mk)
2. (i) Explain three reasons why Y is classified in class Insecta. (ii) Describe two benefits of Y to crop production. (3 mk)
3. (i) Draw specimen Z and label five external structures. (ii) How do these structures assist in survival? (3 mk)

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