2014 - WAEC Agriculture Past Questions and Answers - page 2
11
Which of the following is not an effect of over-graing on soil?
A
Improvement of soil structure
B
soil compaction
C
exposure of soil to erosion
D
depletion of soil nutrients
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12
The major factor affecting distribution of crops in West Africa is
A
climate
B
soil
C
topography
D
disease
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13
Nutrient replenishment in soil can be enhanced by
A
crop removal
B
leaching
C
erosion
D
crop rotation
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14
What is the function of nitrosomonas bacteria in the nitrogen cycle?
A
Ammonification
B
Nitrification
C
Denitrification
D
Nitrogen fixation
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15
A mass of decayed plant and animal wastes processed in pits is referred to as
A
green manure
B
farmyard manure
C
compost manure
D
inorganic manure
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16
A major disadvantage of monoculture is that
A
soil texture is destroyed
B
soil microbes are destroyed
C
diseases and pests build up
D
farms cannot be mechanized
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17
Which of the following pairs of farming systems uses bush fallowing?
A
crop rotation and land rotation
B
shifting cultivation and land rotation
C
land rotation and mixed farming
D
crop rotation and monoculture
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18
Continuous soil tillage could lead to
A
increased infiltration of water .
B
reduced run-off
C
break down of soil structure
D
improved soil texture
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19
A bag of fertilizer has a ratio of 10:0 written on it. This means that the fertilizer is a
A
lime fertilizer
B
nitrogenous fertilizer
C
phosphate fertilizer
D
potassium fertilizer
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20
Theobroma cacao grows best in the
A
sudan savannah zone
B
humid rain forest zone
C
mangrove swamp forest zone
D
northern guinea savannah zone
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