You are provided with specimens: B1, B2, B3, C1, C2, C3, C4, D1, D2, D3, D4, and D5. (a) (i) Identify specimens B1, B2, and B3 (ii) State two main types of specimen B1 and their roles in tractor operation (iii) Outline three signs that indicate specimen B1 is damaged or worn out (iv) Mention the unit of a tractor transmission system in which specimen B3 is found and describe its operating principle (b) (i) Identify specimens C2, C3, and C4 (ii) State the uses of specimens C1, C2, and C4 (iii) Differentiate between the roles of specimens C3 and C4 (c) (i) Identify specimens D1, D2, D3, and D4 (ii) Show the correct arrangement and indicate the type of fitting used when joining specimen D5

1. Mention the unit of a tractor transmission system in which specimen B3 is found and describe its operating principle (1 alama)
2. Differentiate between the roles of specimens C3 and C4 (1 alama)
3. Show the correct arrangement and indicate the type of fitting used when joining specimen D5 (1 alama)

Boresha ili kuona majibu ya mfano.

You are provided with specimens: E1, E2, F1, F2, and F3. (a) (i) Identify specimens E1 and E2 (ii) Outline four characteristics of specimen E2 that make it suitable for fertilizer application (iii) State the purpose of specimens E1 and E2 in crop production (iv) Specify the growth stage at which specimen E2 is recommended for application (b) (i) Identify specimen F1 by its botanical name (ii) Name the disease affecting specimen F1 and its causative organism (iii) Identify the disease present in specimen F2 (iv) List two modes of transmission of the disease in specimen F2 (v) Provide the scientific name of specimen F3 (vi) Mention three crops commonly infested by F3 (vii) Suggest whether F3 is a field or storage pest and justify with two reasons

1. Specify the growth stage at which specimen E2 is recommended for application (1 alama)
2. List two modes of transmission of the disease in specimen F2 (1 alama)
3. Suggest whether F3 is a field or storage pest and justify with two reasons (1 alama)

Boresha ili kuona majibu ya mfano.

You are provided with specimens: G1, G2, G3, and G4. (a) (i) Identify specimens G1, G2, G3, and G4 using scientific names (ii) State the best preservation method for specimens G1 and G2 (iii) Give three reasons why farmers conserve specimens G1 and G2 (b) (i) Explain how specimen G4 can infest farm animals (ii) Name two animals that are common hosts for specimen G4 (iii) Describe the relationship between specimen G3 and G4 (iv) Outline three methods to control specimen G4 on livestock

1. Give three reasons why farmers conserve specimens G1 and G2 (1 alama)
2. Outline three methods to control specimen G4 on livestock (1 alama)

Boresha ili kuona majibu ya mfano.