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Agricultural Science
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11
Which of the following types of soil contains particles of diameter between 0.02 mm and 2.o mm?
A.
sand
B.
silt
C.
gravel
D.
clay
E.
stone
View Answer & Discuss (2)
WAEC 1988
12
A farmer cultivating leafy vegetables will require fertilizers with a relatively high content of
A.
calcium
B.
magnesium
C.
potasssium
D.
nitrogen
E.
phosphorus
View Answer & Discuss (1)
WAEC 1988
13
The earthworm is important to the farmer because it
A.
improves soil structure
B.
improves soil texture
C.
destroys soil pathogens
D.
adds nutrients to the soil
E.
prevents soil erosion
View Answer & Discuss (4)
WAEC 1988
14
The type of rocks formed from the molten magma is known as
A.
sedimentary
B.
igneous
C.
metamorphic
D.
schist
E.
sandstone
View Answer & Discuss (1)
WAEC 1988
15
The relationship between the microorganisms and plant in the nitrogen cycle is best described as
A.
parasitism
B.
commensalism
C.
competition
D.
symbiosis
E.
saprophytism
View Answer & Discuss (3)
WAEC 1988
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