Question 4
(a) Complete the table below.
[9 marks]
(b) A poultry farmer plans to rear broilers in a deep litter house measuring 36 m long and 10 m wide. If a floor space of 0.36 m² per adult chicken is recommended for broiler production, calculate the number of broilers that the farmer can rear.
[4 marks]
(c) State five advantages of introducing legumes in a pasture. [5 marks]
Observation
Candidates’ performance in Question 4(b) and (c) was above average. However,
several candidates lost marks in Question 4(a) due to failure to adhere to the scientific
convention of writing botanical names as well as lack of knowledge of the method of propagating ginger and classification of jute based on its use.
The expected answers include:
4. (a) Completion of Table
Crop |
Botanical name |
Classification based on use |
Method of propagation |
Onion |
Allium cepa |
- Vegetable |
- Seed |
Ginger |
Zingiber officinale |
- Spice |
- Rhizome |
Jute |
Corchorus olitorius |
- Fibre |
- Seed |
(c) Advantages of introducing legumes in a pasture
- Extend the growing season of pastures
- Improve the quality/palatability of forage
- Reduce nitrogen fertilizer requirements of pastures/increase nitrogen content of soil
- Reduce susceptibility to pests and diseases
- Increase organic matter content of soils
- Control/suppress weed growth
- Reduce soil erosion
- Produce higher yield of herbage
- Provide balanced/complete diet