2005 - WAEC Agriculture Past Questions and Answers - page 2
11
The most active agent of physical weathering in arid regions is
A
wind
B
water
C
temperature
D
ice
12
Soils in forest areas would normally have
A
low moisture content
B
high proportion of sand
C
high proportion of humus
D
low microbial activity
13
Clay particles hold cations because they
A
are negatively charged
B
become hardened when dry
C
are very small in size
D
have definite shapes
14
Under which of the following conditions will organic matter in the soil decompose fastest?
A
optimum pH
B
low temperature
C
anaerobic conditions
D
waterlogged condition
15
Which of the following materials can be applied to the soil in order to correct yellowing of leaves?
A
lime
B
urea
C
gypsum
D
bone meal
16
One importance of cover crops is that they
A
provide shade for crops
B
protect crops from pests
C
increase soil acidity
D
suppress weed growth
17
The appropriate irrigation method for upland rice field is
A
sprinkler
B
drip
C
flooding
D
underground
18
Drainage refers to
A
removal of excess water from the soil
B
removal of nutrients from the soil
C
addition of water to the soil
D
protection of soil from erosion
19
Energy in fossil materials may be harnessed as
A
water energy
B
wind energy
C
electrical energy
D
fuel energy
20
A decorticator is useful in the processing of
A
maize
B
cotton
C
cocoa
D
groundnut
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