This question was fairly attempted by the candidates. In 2(a-b), most of the candidates were able to state the problems of agricultural development in West Africa and enumerate the benefits of commercial farming. However in 2(c-d), majority of them could not list farm machinery and farm implements and describe how the Gunter’s chain is used.
The expected answers include:
2(c) Farm machinery and farm implement
Farm machinery
- Tractor - Tree puller
- Bulldozer - Incubator
- Sheller - Milking machine
- Dryer - Power tiller
- Combine harvester - Mist blower/motorised knapsack sprayer
- Motorised slasher/lawn mower
Implements
- Plough - Mower/slasher
- Harrow - Knapsack sprayer
- Baler - Planter/seed drill/broadcaster
- Rotavator - Fertilizer applicator/combine drill
- Cultivator - Ridger
- Harvester - Boom sprayer
(d) Description of how the Gunter’s chain is used
- Two people are required: a leader and a follower
- Two fixed points(x and y) are marked with surveying poles such
that one is clearly visible from the other
- Leader pulls chain from one fixed point x towards the other pole y while
the follower holds the end handle firmly against base of first pole x
- Ensure chain is straight and between the 2 points x and y
- Leader pushes an arrow into the ground next to the “leading” handle
- Leader pulls chain towards 2nd pole until follower reaches the arrow
where the chain is firmly held
- Leader pushes another arrow into the ground
- As chain is pulled for another chain length, the follower pulls out the first
arrow
- When the 2nd pole is reached, chain should be pulled past it so that the
chain can be measured
- Distance between the two poles can be calculated by multiplying the
number of arrows held by follower by 20 and adding length of the part of
chain at the end
The expected answers include:
2(c) Farm machinery and farm implement
Farm machinery
- Tractor - Tree puller
- Bulldozer - Incubator
- Sheller - Milking machine
- Dryer - Power tiller
- Combine harvester - Mist blower/motorised knapsack sprayer
- Motorised slasher/lawn mower
Implements
- Plough - Mower/slasher
- Harrow - Knapsack sprayer
- Baler - Planter/seed drill/broadcaster
- Rotavator - Fertilizer applicator/combine drill
- Cultivator - Ridger
- Harvester - Boom sprayer
(d) Description of how the Gunter’s chain is used
- Two people are required: a leader and a follower
- Two fixed points(x and y) are marked with surveying poles such
that one is clearly visible from the other
- Leader pulls chain from one fixed point x towards the other pole y while
the follower holds the end handle firmly against base of first pole x
- Ensure chain is straight and between the 2 points x and y
- Leader pushes an arrow into the ground next to the “leading” handle
- Leader pulls chain towards 2nd pole until follower reaches the arrow
where the chain is firmly held
- Leader pushes another arrow into the ground
- As chain is pulled for another chain length, the follower pulls out the first
arrow
- When the 2nd pole is reached, chain should be pulled past it so that the
chain can be measured
- Distance between the two poles can be calculated by multiplying the
number of arrows held by follower by 20 and adding length of the part of
chain at the end. |
