1992 - WAEC Agriculture Past Questions and Answers - page 3
21
Soil-borne diseases of crops can be effectively reduced by
A
terracing
B
crops rotation
C
liming
D
irrigation
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22
Gametes are produced through the process of
A
fusion
B
meiosis
C
mitosis
D
pollination
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23
Which of the following is the most suitable raw material used in the production of pulp in paper industry?
A
Hardwood
B
Softwood
C
Heartwood
D
Sapwood
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24
Which of the following explains the term pruning?
A
removal of unnecessary branches of trees crops
B
Adequate spacing of seedlings during transplanting
C
Removal of diseases or dead crops from the farm
D
hardening of seedlings in the nursery
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25
- The freshly cut forage crops fed to livestock in their housing units are referred to as
A
paddock grazing
B
rotational grazing
C
silage
D
hay
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26
Which of the following plant diseases is not caused by fungus
A
Black arm
B
Rice blast
C
Rice smut
D
cassava leaf-spot
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27
Trees for lumbering will be regularly available in Nigerian forests if
A
there is an increase in annual rainfall
B
fertilizers are applied to trees
C
timber is no longer used for construction purposes
D
a tree is planted for everyone felled
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28
The side effects of the various preventive and control measures of pests and diseases of crops include the following except
A
environmental pollution
B
poisoning of wildlife
C
disruption of the ecosystem
D
improvement in the quality of farm produce
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29
Which of the following parts of plants are normally used for vegetative propagation?
A
stem, root and seed
B
stem, root and flower
C
fruit, leaf and root
D
leaf, flower and stem
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30
The correct sequence in preparing new land for cropping is usually
A
stumping, laying out of farm, ridging and tiling
B
laying out of farm, ridging, stumping and tilling
C
tilling, stumping, laying out of farm
D
ridging, laying out of farm, tilling and stumping
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