Question 5
-
(a) Explain the term colostrum. (3 marks)
(b) Draw and label the structure of a chicken egg. (7 marks)
(c) Study and complete the table below which illustrates the law of diminishing returns
(8 marks)
Fixed Factors
(Land) (ha)Variable Factor
(Fertilizer) (Bag)Total Product
(kg)Marginal Product
(kg)2
2
2
2
2
2
2
21
2
3
4
5
6
7
81
4
15
(iv)
(v)
48
49
49(i)
(ii)
(iii)
13
12
(vi)
(vii)
(viii)
Observation
- Most candidates gave satisfactory explanation of colostrum.
- Majority of candidates performed poorly in this question. They could not draw and label correctly the structure of a chicken egg.
- Many candidates demonstrated lack of understanding of the law of diminishing returns as they failed to give correct figures in the table.
The expected answers include:
5. (a) Explanation of Colostrum
- It is the first milk produced from the udder of a dam within the first five days after parturition
- It is rich in antibodies and nutrients
- It has laxative effect
- It is yellowish in colour
(b) Structure of a chicken egg
(c) Completion of the table on law of diminishing returns
(i) ̶
(ii) 3 kg
(iii) 11kg
(iv) 28kg
(v) 40kg
(vi) 8kg
(vii) 1kg
(viii) 0kg