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FREE 2017 WAEC GCE AGRIC SCIENCE ANSWERS

2017 WAEC GCE AGRIC ANSWERS BY MR.CODED-OF-CODEDCLASS.COM

Agric OBJECTIVE

 

1-10: DCDCDCBACA

11-20: BDDDCCBADB

21-30: DBDCDDDDBB

31-40: DCDDCCBCBA

41-50: BCDAAB-ACC

1ai)

unpredictable climate

i)Droughts or prolong periods without rain results in poor yields

ii)Flooding results in erosion

iii)Inadequate sunshine also reduces photosynthetic ability of plants

1aii)

inadequate rural infrastructure

i)This results in urban drift ie massive exodus to big cities for better standard of living.

ii)Results to massive reduction in agricultural work force in rural settings

iii)Results in low agricultural production

1aiii)

Diseases

i)Result in increase in agricultural cost of production

ii)Reduce the quality of farm produce

iii)Reduce farmers income

1bi)

i)Contour ditch

ii)Border dyke

iii)Furrow irrigation

iv)Wild flooding

1bii)

i)High salt problems or salinity of soil which prevents proper growth of crops

ii)Transmissions of diseases is possible

iii)There is a build up and spread of pests

iv)Pollution of the environment is possible

v)There is high cost of equipment

 

 

(3ai)

i)Long lactation periods

ii)Immunity and resistence from diseases

iii)Healthy variety

iv)Long life

 

(3aii)

i)Camels

ii)Horses

 

(3aiii)

i)It can perform more tedious jobs than man.

ii)It can handle many farm operations.

iii)It can be controlled or easy to operate.

iv)They are much stronger than man.

 

(3b)

COMPLET THE TABLE

 

Symptoms

i)angular spots on leaves

ii)death of shoots and rotting bolls

iii)distortion of leaves

iv)leaf curl

 

Control Measure

i)remove and burn infected plants

ii)grow resistants varieties

iii)spray with insecticides

iv)up root and burn infected plants

================================

 

(4a)

i)Sunlight

ii)Temperature

iii)Rain

iv)Water or Humidity

v)Soil or water chemistry

vi) pollution

 

4b)

i)green plants make use of the food they manufacture to produce seed and fruits

ii)dead an decayed plants and animals provide food for the saprophytic organismm

iii)seed produced by plants is used to reproduce another plant

iv)animals make use of the carbonhydrate food produced by plants to get energy and fruit used as food

v)animals and plant produce carbonhydrate(Co2) during respiration to enrich the atmostphere with Co2

 

4c)

spacing 40cm*40cm

but 100cm=1m

40cm/100=0.4m

spacing=0.4m*0.4m

spacing=0.16m

 

4di)

i)Hemp

ii)Hoopvine

iii)Nettles

iv)Ramie

 

4dii)

i)Tea

ii)Maté

iii)Kola

iv)Kava kava.

=================

 

5ai)

i)beak

ii)oesophagus

iii)proventriculus

iv)Gizzard

v)Large Intestine

 

5aii)

i)The beak moistens food with Saliva.

ii)The oesophagus takes the food down to the crop to be stored.

iii)proventriculus mixes the food with acids and digestive enzymes.

iv)Gizzard always contains quantities of hard objects such as gravel or other grit that aids in the disintegration of food

v)Large Intestine is where the last of the water reabsorption occurs.

=================================

 

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Posted by on September 4, 2017.

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