Question 2
- (a) (i) Specimens C and D are collectively term as
(ii) State one use of each of specimen C and D
C
D
(iii) Name two other materials that are examples of the term stated in 2(a)(i).
(b) (i) Classify specimens E, F, G, H, and J into fish feed and fish food.
(ii) Which of the fish feed classified in 2(b)(i) is protein-yielding?
Observation
A few candidates were able to name the protein yielding feed ingredient from specimens E (Earthworm), F (Maggot), G (Pawpaw leaves), H (Rice grain), and J (Soya bean cake). However, many candidates could not differentiate between uses and advantages of.
The expected answers were:
(a) (i) Collective name for specimens C (Fish entrails) and D (Fish bones)
- Fish by-product
(ii) Uses of specimens C (Fish Entrails) and D (Fish bones)
Specimen C (Fish Entrails)
- Bait
- Fertilizer / Manure
- Feed / Feed additive
Specimen D (Fish bones)
- Feed / Feed additives / Bone meal
- Source of minerals / Calcium / Phosphorus
(iii) Examples of other Fish By-products
- Scales
- Fins
- Fish Oil
- Skin
- Spines
- (b) (i) Classification of specimens E (Earthworm), F (Maggot), G (Pawpaw leaves), H (Rice bran) and J (Soya bean cake) into fish food and fish feed
Fish feed |
Fish food |
|
|
(ii) Protein - yielding feed ingredient
Specimen J (Soya bean cake)
(iii) Advantages of Specimen J (Soya bean cake) to fish
- Helps fish to grow
- Builds resistance against disease
- Helps build fish flesh
- Development of hormones
- For enzyme production
- Egg/milt development /production
- Helps in the repair /replacement of worn out tissues