2010 - WAEC Agriculture Past Questions and Answers - page 2
11
Which of the following factors is both a physical and a chemical agent of rock weathering?
A
temperature
B
animal
C
water
D
oxygen
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12
Physical properties of clay soil include
A
low porosity and low capillarity
B
high porosity and high capillarity
C
low porosity and high capillarity
D
high porosity and low capillarity
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13
Streak disease of maize is caused by
A
virus
B
nematode
C
fungus
D
bacterium
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14
In the carbon cycle, atmospheric carbon dioxide is replenished by
A
respiration
B
transpiration
C
lightening
D
dentrification
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15
The following farming practices expose the soil to agents of erosion except
A
bush burning
B
land clearing
C
crop rotation
D
overgrazing
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16
Which of the following effects is not due to water-logging?
A
inhibition of crop development
B
enhancement of leaching
C
inhibition of the activities of soil microorganisms
D
wilting of crop roots
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17
An advantage of sprinkler irrigation is that
A
it assists farmers to raise a greater varity of crops
B
it is easy to instal
C
large areas of land can be irrigated
D
it can be afforded by peasant farmers
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18
The main sources of farm power in West Africa are
A
wind,solar and mechanical
B
human,animal and mechanical
C
mechanical,solar and human
D
electrical,mechanical and solar
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19
The function of the mouldboard in a mouldboard plough is to
A
cut a horizontal line in the soil
B
give support to the share
C
invert the furrow slice
D
keep the equipment steady during operation
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20
The objectives of farm mechanization include the following except to
A
obtain higher farm yield
B
carry out farm operation quickly
C
improve the quality of farm produce
D
produce disease-resistant crop varieties
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