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Agricultural Science Paper 2, May/June 2010  
Questions: 1 2 3 4 5 6 7 8 9 10   Main
General Comments
Weakness/Remedies
Strength















Question 6

(a) State four ways in which weeds are beneficial to the farmer. [ 4 marks]
(b) Classify insect-pests into three groups based on their mode of feeding and give
two examples of each. [9 marks]
(c) State three ways by which pasture can be made available to cattle. [ 3 marks]

OBSERVATION
 

This question was not popular with the candidates. In question 6(a), many candidates could not state ways in which weeds are beneficial to the farmers. However, in question 6(b), majority of the candidates were able to classify insect-pests into groups based on their mode of feeding and give examples. In question 6 (c), most candidates could not state the ways by which pasture can be made available to cattle.
The expected answers include:
Ways in which weeds are beneficial to the farmer
Weeds help in checking soil erosion
Some weeds are useful as food for humans
Some weeds serve as feed for livestock
Certain weeds have medicinal properties
Weeds can be ploughed into the soil to replenish soil nutrients
Some weeds are used for roofmg, making mats, baskets etc
Weeds can be cut and used as mulch
For compost making
Leguminous weeds harbour bacteria that help to fix atmospheric nitrogen into the soil
Ways by which pasture can be made available to cattle
Prepared as hay for livestock
As silage
Cut and carry as fresh fodder/zero grazing
Animals can be taken out for grazing

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