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Neco Gce 2017 Agric Science Practical Answers – Nov/Dec Expo
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Neco Gce 2017 Agric Science Practical Answers – Nov/Dec Expo
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chidusky
chidusky (m)
1509041575 ago
NECO GCE - AGRIC PRACTICAL ANSWERS
Exam Time: Wednesday, 27th October, 2017
Agricultural Science 3 (Alternative to Practical)
3.30am – 5.00pm
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(2a)
to determine the presence of living organism in the soil

(2b)
i)rubber cock
ii)string
iii)lime water
iv)conical flask
Iv) – lime water

(2c)
(i) Collection of fresh garden soil in a piece of cellophane bag.
(ii) One sample is heated and both bags are tied up with string.
(iii) Placed all in a flask containing lime water
(iv) The other end of flask is corked and allowed the veting for six hours.
(v) The heated sample serves as control experiment to kill all organisms in the soil.

(2d)
To kill all organisms in the soil.

(2e)
C – The lime water turns milky since carbondioxide is released
D – The lime water remains the same

(2f)
C – The unheated soil has micro organisms that release carbondioxide
D – The heated soil do not have any to release to the carbondioxide.
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(3a)
E- coco nut tree
F- bod pest
G- tuber

(3b)
(i)palm oil
(ii)soap production

(3c)
pest: birds
disease: palm bud

(3d)
(i)leads to scientific resreach and discovery
(ii)it destorys the plant for a form of ecosystem
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(1a)
A – Disc plough
B – Mouldboard plough

(1b)
(I) A is used for ploughing the soil while B is used for primary tillage.
(II) A is used to turn over top soil before planting while B is used for making ridges.

(1c)
I – Beam cap
II – Standard beam
III – Frame

(1d)
(i) A is stronger than B
(ii) A can be used in tropical region while B cannot
(iii) A can be used in clayey soil while B cannot
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