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
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