2017/2018 WAEC GCE EXPO: AGRIC PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE HERE

Exam Time: Monday, 4th September, 2017
Agricultural Science 3
(Alternative to Practical)
9.30am – 11.00am
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(1a)
Sieve
(1bi)
It is used to seperate sands from stones
(1bii)
-It should be clean after used
-It should be kept in a cool dry place
-If it made up of metal, It should be grease before long time store
(1c)
(i) Clay – 0.002mm
(ii) SIlt – 0.002mm – 0.02mm
(iii) Find sand 0.02mm – 0.2mm
(iv) Coarse sand – 0.2 – 2mm
(1di)
Acidic
(1dii)
-Application of slake lime
-Application of quick lime
-Application of ash
-Application of limestone
-Application of organic manure
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(2a)disc plough
(2b)
I – furrow wheel
II – beam
III – furrow width adjustment
IV – disc scraper
V – disc
(2c)
I – furrow wheel:
It provides a balancing effect for the plough as it support both vertical and side thrusts.
II – beam:
It holds disc firmly to the beam
III – furrow width adjustment
It holds the disc firmly to the beam
IV – disc scraper:
It is a point of attachment to the tractor or work animal
V – disc:
it rotates and cut the soil into vertical and horizontal upside down for agricultural activities.
(2d)
this is a particular implement used for turning the soil upside down into lumps for farming purpose.
(2e)
-wash and clean after use
-store in a cool dry place
-always do periodic checks before and after use to increase life span.
-grease metal parts or joints to prevent excessive friction
-tighten all bolts and nuts in the machine
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(3a)
I – Tassel
II – silks
III – husk
IV – leaf blade
V – leaf sheath
(3b)
-propagated by seed
-maybe planted manually
(3c)
-The husks can be removed from the cobs
-shelling should be done to remove grains from the cobs.
-winnowing is done to remove dirt from the grain.
(3d)
use of corn-picker
(3e)
-maize rust
-leaf blight
(3f)
-breeding of resistant varieties.
-applying recommended fungicides.
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(4a)
I-liverfluke
II-fowl tick
(4b)
-it leads to loss of blood.
-it causes liver rot
-it obstructs the bile duct
-it may result in death
-it lead to digestive disturbance
(4c)
Cattle
Sheep
Goat
(4d)
-tick fever
-heart water diseases
-anaemia
(4e)dipping of the animal.
-animals should be kept in a clean surrounding.
-ticks should be hand picked from the body of the host animal
-practice rotational grazing or paddocking
-animal bedding should be changed regularly.


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