Observation

 

Candidates’ performance in Question 3 was below average due to
(a)        failure of candidates to adhere to the scientific convention of writing
botanical names and wrong spellings;
(b)        inadequate knowledge of classification of crops based on their uses;
(c)        failure to sequentially outline the steps involved in processing groundnut
into vegetable oil;
(d)       lack of knowledge of diseases of oil palm.

The expected answers include:


3.   (a)   Botanical names of crops from which specimens I (Groundnut seeds), J (Cotton lint) and
         K (Oil palm fruit) and L (Rubber latex) were obtained

Specimen I   (Groundnut)    -  Arachis hypogea
Specimen J   (Cotton)          -  Gossypium spp
Specimen K  (Oil palm)     -  Elaeis guineensis
Specimen L  (Rubber)         - Hevea brasiliensis    

                    

             (b)   Classification of specimens I (Groundnut seeds), J (Cotton lint), K (Oil palm fruit) and
                    L (Rubber latex) according to their uses

                       Specimen I (Groundnut seeds) -  Legume/pulse/grain legume/Oil crop
                       Specimen J (Cotton lint)          -  Fibre crop/Oil crop
                       Specimen K (Oil palm fruit)    -  Oil crop
                       Specimen L (Rubber latex)      -  Latex crop  

   
(c)   Steps involved in the processing of specimen I (Groundnut seeds) to obtain vegetable oil
-    Drying                                   
-    Threshing /dehulling/picking
-    Winnowing  
-    Shelling/decortication
-    Winnowing
-    Roasting
-    Milling/pressing/pounding
-    Oil extraction/Filtration

(d)  Diseases of the crop from which specimen K (Oil palm fruit) was obtained




  -    Anthracnose              
-    Leaf spot/Freckle 
-    Ganoderma disease/Galadema
-    Algae spot
-    Blast
-    Vascular wilt
-    Brown Germ