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WAEC - Agricultural Science (2010)

1
Which of the following land tenure system for individual ownership?
Answer
(B)
freehold system
2
The development of agriculture in West Africa is not generally affected by
Answer
(B)
religious beliefs
3
The most common grazing system in West Africa is
Answer
(A)
continuous grazing
4
Which of the following is not a role of government in agricultural production?
Answer
(A)
provision of labour
5
The main reason for establishing game reserves is to prevent wildlife from
Answer
(D)
becoming extinct
6
Which of the following practices promote agricultural development?
Answer
(A)
growing disease-resistant crops
7
The biotic factor which derives much benefit from livestock and reduces productivity is a
Answer
(B)
parasite
8
The removal of top soil from a small area of soil surface due to the impact of raindrops is known as
Answer
(D)
splash erosion
9
Which of the following groups of crops grow best in the savanna zones of West Africa?
Answer
(A)
cotton,millet and groundnut
10
High temperature and pressure convert sandstone to
Answer
(B)
quartzite
11
Which of the following factors is both a physical and a chemical agent of rock weathering?
Answer
(C)
water
12
Physical properties of clay soil include
Answer
(C)
low porosity and high capillarity
13
Streak disease of maize is caused by
Answer
(A)
virus
14
In the carbon cycle, atmospheric carbon dioxide is replenished by
Answer
(A)
respiration
15
The following farming practices expose the soil to agents of erosion except
Answer
(C)
crop rotation
16
Which of the following effects is not due to water-logging?
Answer
(D)
wilting of crop roots
17
An advantage of sprinkler irrigation is that
Answer
(C)
large areas of land can be irrigated
18
The main sources of farm power in West Africa are
Answer
(B)
human,animal and mechanical
19
The function of the mouldboard in a mouldboard plough is to
Answer
(C)
invert the furrow slice
20
The objectives of farm mechanization include the following except to
Answer
(D)
produce disease-resistant crop varieties
21
The survey instrument used for measuring horizontal and vertical angles on the field is the
Answer
(A)
theodolite
22
A farmstead should be located close to a source of water because of the following reasons except
Answer
(D)
erosion of farm structures
23
Which of the following activities are cultural practices? I. Harrowing II. Filling-in III. Mulching
Answer
(D)
I, II and III
24
Training of yam vines is important to
Answer
(C)
increase photosynthesis
25
Grafting involves the
Answer
(C)
transfer of a bud from one plant to another
26
Which of the following products is not from coconut?
Answer
(D)
jam
27
The most convenient method of fertilizer application used when crops have been planted in rows is
Answer
(D)
ring placement
28
Which of the following is not a characteristic of weeds?
Answer
(C)
seeds have short period of viability
29
Coffea spp. grows best
Answer
(C)
in mangroves
30
A major raw material of the paper industry is
Answer
(A)
pulp
31
Which of the following farming practices are cultural methods used to control pests and diseases? I. Crop rotation II. Mixed farming III. Monoculture
Answer
(A)
I and II only
32
The recommended spacing for oil palm cultivation is
Answer
(A)
9 m triangular
33
Which of the following plants is a pasture legume?
Answer
(B)
stylosanthes gracilis
34
Mould growth on cereal grains stored in damp conditions is caused by
Answer
(B)
fungus
35
Corms, rhizomes and tubers are examples of
Answer
(A)
underground stems
36
Which of the following operations takes place in a ginnery?
Answer
(C)
separation of cotton seeds from lint
37
The maize stem borer is best controlled by
Answer
(A)
destroying and burning all the affected crops
38
Disease resistance is one of the aims of crop improvement because it
Answer
(A)
enables crops withstand attack by pathogens
39
Which of the following characteristics is not important in beef cattle breeding?
Answer
(B)
increased butter-fat percentage
40
The milk let down hormones in farm animals is called
Answer
(C)
oxytocin
41
Rabbits can digest roughages because they possess
Answer
(B)
enlarged caecum
42
Natural immunity can be conferred on newly-born animals through
Answer
(C)
feeding with colostrum
43
The average gestation period in sheep is
Answer
(C)
150 days
44
Feeds given to animals solely to sustain their live weight is called
Answer
(B)
maintenance ration
45
Which of the following feedstuffs requires much processing before being fed to animals?
Answer
(D)
groundnut
46
Mating in poultry is known as
Answer
(C)
tupping
47
The causal organism of anthrax in farm animals is known as
Answer
(A)
baccillus anthracis
48
Which of the following fish species is found in fresh water?
Answer
(B)
tilapia
49
The disease which affects only animals other than humans is
Answer
(B)
rinderpest
50
Prevention of animal diseases involves the following except
Answer
(C)
idebtifying the source of diseases
51
Which of the following organisms is an ectoparasite of farm animals?
Answer
(B)
louse
52
Which of the following factors is the least important in selecting a site for a fish-pond?
Answer
(D)
availability of manure
53
The fish preservation method, which results in the greatest water loss is
Answer
(D)
smoking
54
An infectious disease of livestock characterized by sudden death and black bloody discharge from the nose, mouth and eyes is known as
Answer
(A)
anthrax
55
The source of credit with the most unfavourable terms of payment in West Africa is
Answer
(A)
financial institutions