waecE-LEARNING
Agricultural Science Paper 3, Nov/Dec 2012  
Questions: 1 2 3 4   Main
General Comments
Weakness/Remedies
Strength













































Question 2

1.   (i) Identify specimens H, I, J and K.          [4 marks]

(ii)    State two uses of each of specimens J and K     [4marks]                                                      

(iii)      State three general ways of maintaining specimens H and I.   [ 3 marks]

(iv)      State four precautions to be taken when using specimen J.    [ 4 marks ]

 

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OBSERVATION

This question was fairly attempted by the candidates.  In 2(a)(i), majority of the candidates   were able to identify specimens H(Shears), I(Sickle), J(knapsack sprayer) and K(Wheelbarrow)   They were also able to state the uses of specimens J(Knapsack sprayer) and K(Wheelbarrow) as required in 2a(ii).   However, in 2(a)(iii – iv), most of the candidates could neither state the general ways of maintaining specimens H(Shears) and I(Sickle) nor state the precautions to be taken when using specimen J(Knapsack sprayer).
The expected answers include:
(a)(iii)General ways of maintaining Specimens H(Shears) and I(Sickle)

         -     Wash and dry after use/clean after use
         -     Store in a cool, dry place
         -     Sharpen blades regularly
         -     Grease/lubricate metal blades before storage
         -     Keep wooden handles away from termites
         -     Replace worn-out parts
 

    (iv)    Precautions to be taken when using Specimen J(Knapsack sprayer)
         -     Use protective clothing when spraying
         -     Do not smoke, eat or drink when spraying
         -     Do not use when it is windy
         -     Do not spray against wind direction
         -     After use, always wash hands and face before attempting to eat, drink or smoke
         -     Never blow to clear the blocked nozzle with the mouth
         -     Clean or wash all protective clothing after use
         -     Dispose all empty containers safely into dug pits
         -     Wear a nose mask
         -     Do not point the spray on the direction of persons, animal or food items
         -     Use separate sprayer for different chemicals to avoid contamination
  

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