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Agricultural Science Past Questions
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6
Granite is
A.
a sedimentary rock
B.
a wealtered rock
C.
mentamorphic rock
D.
an igneous rock
E.
a plutonic rock
View Answer & Discuss (2)
WAEC 1988
7
In which layer of the soil profile does most biological activity occur?
A.
parent material
B.
D-horizon
C.
C-horizon
D.
B-horizon
E.
A-horizon
View Answer & Discuss (1)
WAEC 1988
8
When leaves of crop plants show brownish coloration from the tips of the mid-ribs backward, they are showing deficiency symptom of
A.
magnesium
B.
zinc
C.
nitrogen
D.
copper
E.
phosphorus
View Answer & Discuss
WAEC 1988
9
which of the following farm practices can prevent excessive evaporation from soil surfaces?
A.
liming
B.
mulching
C.
weeding
D.
harrowing
E.
ploughing
View Answer & Discuss (4)
WAEC 1988
10
Which of the following is not associated with surface irrigation?
A.
natural flooding
B.
check flooding
C.
sprinkler irrigation
D.
mole drains
E.
tiles
View Answer & Discuss (2)
WAEC 1988
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