You are provided with specimens: W1, W2, W3, and W4. (a) (i) Identify specimen W1 and mention its two functions in soil fertility (ii) Outline three negative effects of excess use of specimen W2 (iii) State two advantages of using specimen W3 in crop production (b) (i) Identify specimen W4 (ii) State two ways specimen W4 is applied on the farm (iii) Mention one problem associated with misuse of specimen W4

1. Identify specimen W1 and mention its two functions in soil fertility (4 mk)
2. Outline three negative effects of excess use of specimen W2 (6 mk)
3. State two advantages of using specimen W3 in crop production (4 mk)
4. Identify specimen W4 (2 mk)
5. State two ways specimen W4 is applied on the farm (4 mk)
6. Mention one problem associated with misuse of specimen W4 (2 mk)

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You are provided with specimens: X1, X2, and X3. (a) (i) Identify specimen X1 by its scientific name (ii) Mention one major pest associated with specimen X1 and its mode of attack (b) (i) Identify specimen X2 (ii) State three features of specimen X2 that make it useful in animal feed formulation (c) (i) Identify specimen X3 (ii) Mention three crops commonly affected by specimen X3

1. Identify specimen X1 by its scientific name (2 mk)
2. Mention one major pest associated with specimen X1 and its mode of attack (3 mk)
3. Identify specimen X2 (2 mk)
4. State three features of specimen X2 that make it useful in animal feed formulation (6 mk)
5. Identify specimen X3 (2 mk)
6. Mention three crops commonly affected by specimen X3 (2 mk)

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You are provided with specimens: Y1, Y2, Y3, and Y4. (a) (i) Identify specimens Y1 and Y2 (ii) Mention three diseases caused by specimen Y3 in livestock (iii) State three control measures against specimen Y3 (b) (i) Identify specimen Y4 (ii) Describe its effect on the productivity of dairy animals

1. Identify specimens Y1 and Y2 (3 mk)
2. Mention three diseases caused by specimen Y3 in livestock (6 mk)
3. State three control measures against specimen Y3 (3 mk)
4. Identify specimen Y4 (2 mk)
5. Describe its effect on the productivity of dairy animals (3 mk)

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