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WAEC - Agricultural Science (1999)

1
The main objective of agriculture is
Answer
(C)
food production
2
Food shortage can be minimized by
Answer
(A)
efficient pest control services
3
Subsistence agriculture is characterized by
Answer
(C)
small farm holders
4
Output is higher in commercial agriculture because of the following reasons except
Answer
(C)
employment of large labour force
5
The most common factor affecting land use is
Answer
(A)
population pressure
6
Financial assistance from government to the farmers is usually in the following forms except
Answer
(A)
loans
7
Which of the following groups of animals is usually kept in game reserves?
Answer
(D)
lions,elephants and leopards
8
The following processes in crops are sensitive to day-length except
Answer
(D)
branching
9
Rain water is made available to crops through
Answer
(D)
root absorption
10
Which of the following rocks is formed from shale?
Answer
(B)
slate
11
The horizon of soil profile which encourages the greatest level of microbial activity is
Answer
(A)
A-horizon
12
The easiest method of determining soil texture in the field is by
Answer
(C)
feeling
13
The type of soil with a particle size of 0.02 to 0.002 mm is
Answer
(B)
silt
14
If urea fertilizer contains 46% nitrogen. calculate the amount of nitrogen in 25 kg bag of fertilizer?
Answer
(A)
11.5 kg
15
Fertile soil is one which
Answer
(D)
contains all essential plant nutrients in suitable proportions
16
The effects of practicing crop rotation include the following except
Answer
(D)
adding humus to the soil
17
The method of irrigation suitable for use on a steep slope is
Answer
(D)
shadoof
18
The main source of power for subsistence equipment is
Answer
(D)
man
19
The most suitable source of power for stationary equipment on a farm is
Answer
(B)
electricity
20
An important farm machine used for coupling many implements is
Answer
(C)
tractor
21
Which of the following is the correct order for land preparation?
Answer
(A)
land clearing-ploughing-harrowing-ridging
22
Which of the following surveying equipment is used for measuring angles during farm surveying?
Answer
(A)
theodolite
23
Which of the following farm practices is not mechanized?
Answer
(D)
transplanting
24
The main aim of mechanised agriculture is
Answer
(C)
having a large land area for cultivation
25
The following are necessary operation in maize cultivation except
Answer
(C)
nursery practices
26
Gunning is a method of processing
Answer
(B)
cotton
27
Ginger is propagated by
Answer
(B)
rhizomes
28
Which of the following is not correct about stylosanthes gracilis? it
Answer
(A)
is an animal legume
29
Which of the following is not a problem of forest management?
Answer
(C)
planting different varieties of timber
30
The tree species commonly planted for pulpwood is
Answer
(A)
gmelina
31
Root-knot disease in tomatoes is caused by
Answer
(B)
nematode
32
Callosobruchus maculatus is a common pest of
Answer
(B)
cowpea
33
Gummosis disease of citrus is caused by
Answer
(B)
fungi
34
Which of the following weeds is dispersed by wind?
Answer
(D)
tridax (tridax procumbens)
35
The characteristic symptoms of mosaic disease of crops is usually observed on
Answer
(B)
leaves
36
The correct sequence in the processes of crop improvement is
Answer
(A)
introduction-slection-breeding
37
A condition which a gene does manifest observation characteristics in the presence of its dominant allele is known as
Answer
(C)
recessiveness
38
Gestation period is defined as the time
Answer
(B)
between conception and parturition
39
The hormone responsible for milk let down in female farm animals is
Answer
(C)
oxytocin
40
The adult male cattle is called
Answer
(A)
bull
41
An advantage of extensive system of rearing goats is
Answer
(A)
low labour requirement
42
Layers ration contains more limestone than growers ration because limestone
Answer
(D)
supplies sufficient minerals to layers for shell formation
43
If 200 layers will consume 25kg of feed per day, calculate the amount of feed consumed by a layer per day.
Answer
(A)
0.25kg/day
44
Which of the following is not a method of improving rangeland?
Answer
(A)
practising continous grazing
45
Miracidium is one of the stages in the life cycle of
Answer
(C)
liver fluke
46
Which of the following is not a symptom of foot and mouth disease of cattle?
Answer
(D)
blood stained diarrhoea
47
Heavy infestation of liver fluke causes poor absorption of fats in livestock by
Answer
(D)
inhibiting the action of the digestive enzymes
48
Methods of preserving fish include the following except
Answer
(A)
boiling
49
Which of the following fishing gears can be used for total harvesting of ponds?
Answer
(D)
dragnet
50
The practice of mating closely-related animals is called
Answer
(D)
in breeding
51
The natural resource utilized for production is
Answer
(D)
land
52
An increase in supply of agricultural produce can be caused by the following except
Answer
(D)
consumers buying less products
53
Which of the following constitutes subsidy in agricultural enterprise?
Answer
(A)
supply of fertilizer to farmers at reduced price
54
Records of money transactions in a farming business are termed
Answer
(B)
farm accounts
55
Calculate the salvage value of a tractor with a depreciation value of N10,580.00 and initial cost of N50,000.00 after a year of use.
Answer
(C)
N39,420.00