Observation

 

This question was well attempted by the candidates.  In 3(a-b), most of the candidates were able to name the major nutrients found in specimens J (Groundnut cake) and K(Bone meal) and their functions but majority of them were unable to name the major nutrients found in specimens L(Elephant grass) and M(Calopogonium) as well as their functions.  
Furthermore, in 3(c), most of the candidates were able to mention the benefits of planting specimens L(Elephant grass) and M(Calopogonium) together in a pasture. More so, majority of them were able to describe how specimen K(Bone meal)  is produced using the dry process as required in 3(d).
           
The expected answers include:

3 (a)    Major nutrients found in Specimens J, K, L and M
L          Elephant grass         -           Carbohydrate                                   
M         Calopogonium         -           Protein                                              

  (b)     Major functions of the major nutrients found is specimens L and M      
L(Carbohydrate)

- Main source of energy for animals
- Source of materials necessary for fattening/fat storage
- Formation of nucleic acids (DNA, RNA)                                                                                                                                  

M (Protein)

- Needed for growth/building of muscles
- Synthesis of enzymes
- Synthesis of hormones
- Formation of milk/egg
- Repair of worn-out tissues
- For building protective coverings e.g. feathers, scales, hooves
- Formation of antibodies
- Formation of gametes