2011 - WAEC Agriculture Past Questions and Answers - page 2
11
Which of the following properties of soil determines its water-holding capacity? I. Texture II. pH III. Colour IV. Structure
A
I and II only
B
I and IV only
C
II and III only
D
III and IV only
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12
Which of the following statements about soil organisms is false?
A
soil pH will attack population of soil organisms
B
population of soil living organisms is increased with increase in soil organic matter
C
soil with good texture and structure cannot harbour soil microbes
D
soil temperature affects the activities of soil organisms
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13
A detrimental effect of bush burning is that it
A
destroys soil organic matter
B
destroys weed seeds
C
sterilizes the soil
D
adds potash to the soil
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14
The following crops will enrich the soil with nitrates except
A
calopogonium
B
pueraria
C
centrosema
D
exoriepus
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15
Which of the following groups of rocks is formed as a result of volcanic eruption?
A
lomestone,basalt and shale
B
basalt,granite and pumice
C
sandstone,granite and quartzite
D
marble,gneiss and shale
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16
The following fertilizers can be used to neutralize soil acidity except
A
wood ash
B
ammonium nitrate
C
limestone
D
calcium phosphosilicate
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17
The following are advantages of sub-surface irrigation except that
A
it is suitable for soils with low water holding capacity
B
it can be used only for specific types of crops
C
the rate of evaporation is greatly reduced
D
it reduces the incidence of pests
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18
Which of the following statement is a disadvantage of human power? it
A
controls other sources of farm power
B
brings about least damage
C
is easily available and controlled
D
has low output
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19
The instrument which enables a surveyor to find the direction of a base line is
A
abney level
B
ranging pole
C
plumb bob
D
magnetic compass
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20
Limitations of farm mechanization in West Africa do not include
A
land fragmentation
B
high capital investment
C
availability of spare parts
D
high level technical know-how
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