Neco Gce 2017 Nov/Dec Agricultural Science Practical Expo Answer

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NECO GCE Nov/Dec 2017 Agricultural science practical Questions and Answer Expo

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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

(2a)

To determine the presence of living organisms in the soil.

(2b)

I – Rubber cork

II – String

III – 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.

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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Neco Gce 2017 Nov/Dec Agricultural Science Practical Expo Answer

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