TEST OF PRACTICAL KNOWLEDGE QUESTION (a) ldentify specimens M, N, and O by their common names and their scientific names. Specimen M; Specimen N; Specimen O...

Answer Details

(a) Identification of the specimens

(b) Pest, disease and control for specimen O (sweet orange)

• Pest: Aphids (they suck sap from the young shoots and leaves and transmit viral diseases). Control: spray with an appropriate insecticide.
• Disease: Gummosis (collar rot), which causes gumming and rotting at the collar of the tree. Control: grow resistant rootstocks, maintain good farm sanitation and well-drained soil, and apply coal tar or a fungicide to the affected part.

(c) Three uses of specimen M (coconut)

1. The white flesh and the coconut water are eaten and drunk as food and refreshment.
2. Vegetable oil is extracted from the dried copra for cooking, soap and creams.
3. The fibrous husk is made into fibre for brushes, ropes and foot mats.

(d) Two methods of preserving specimen N (sweet pepper)

1. Refrigeration (cold storage).
2. Sun-drying (drying / dehydration).

Freeze-drying, pickling and canning are also acceptable methods.