WAEC GCE 2018 AGRICULTURAL PRACTICAL ANSWER NOW AVAILABLE

WAEC GCE 2018 AGRIC PRACTICAL ANSWER

QUESTION 1, 2, 3, 4.
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(1a)
To determine the water content of the soil sample.

(1b)
I – Crucible.
II – Soil sample.
III – Retort stand
IV – Bunsen burner

(1ci)
Water of dry sand = weight of sand and container – weight of container
= 80g – 32g
= 45g

(1cii)
Weight of water lost = original weight of sand and container – final weight
= 95g – 80g
=15g

(1ciii)
Percentage of water lost
= 15/80 x 100/1
= 18.75%

(1d)
(i) Capillary water
(ii) Hygroscopic water
(iii) Gravitational water
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(2a)
Area of farmland = 1/2(70+90)40
=1/2(160)×40
80×40=3200m²

(2b)
The spacing will take an area of 4×4 = 16cm²
The number of banana plants in the farmland =
Total area of farmland/Area taken by each banana
=3200m²/16m²
=200

(2ci)
I – Raging pole
II – Survey Pin

(2cii)
Uses of I:
(i) For mark out area to be measured
(ii) It guides the surveyor

Uses of II:
(i) For marking out chain length as measured
(ii) For making out areas that are not straight

(2ciii)
(i) Rub oil on the metal surface before storage
(ii) Store in a dry place
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3a)
I Grasshopper
II Weevil
III- Cotton stainer

3b) I- Grasslioppers exlubits Incomplete metamorphosis that is Egg- nymph-adult

3c) Transmission of diseases which are harmful, to Crops
– it leads to Stunted growth, of plants
– leads to yellowing of leaves due to the absence of macro nutrients like phosphorus
– leads to death of plants.

3d) 1) use of avia’des.
2) setting of traps like funnel entrance traps with trigger mechanisms
3) use of fenced traps
4) use of poison baits.
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(4a)
I – Duct
II – Testis
III – Penis
VI – Seminal Vesicle
V – Penis Coat
IV – Epididymis

(4b)
(i) Duct – it moves the sperm cell from testis to penis.
(ii) Testis: it helps to store the sperm cell or spermatozoa
(iii) Penis – it is used to introduce the sperm cell into the female.
(iv) Seminal Vesicle: it helps to form a fluid in which the sperm cells can move.
(v) Penis coat – it’s protect the Penis
(vi) Epididymis – it produces the sperm cells

(4ci)
Castration

(4cii)
– Duct will cut
– The epididymis will be removed

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