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WAEC - Agricultural Science (1993)

1
Land tenure system is a process of
Answer
(C)
acquiring land for agricultural purposes
2
The disadvantages of land fragmentation include the following except
Answer
(C)
facilitating the use of simple and cheap tools
3
Which of the following is not component of soil?
Answer
(E)
texture
4
The soil nutrient which is important as a constituent of plant proteins and hormones is
Answer
(E)
sulphur
5
Which of the following statement about crop rotation is not correct?
Answer
(C)
it encourages the build up of pests and diseases of crop
6
Which of the following is the best way to reduce surface run-off on farmlands?
Answer
(B)
providing adequate plant cover
7
In the process of recycling carbon in nature, carbondioxide is used by crops during
Answer
(E)
photosynthesis
8
Which of the following is a day-neutral crop?
Answer
(B)
maize
9
During the processes of soil formation, the cracks or crevices that are first noticed on the rocks are normally caused by
Answer
(D)
temperature
10
The major climatic factors influencing agricultural activities in the tropics include the following except
Answer
(C)
sunlight
11
Which of the following is not a way of maintaining soil fertility?
Answer
(E)
monocropping
12
A soil with the PH range of 6.1 to 6.9 can be described as
Answer
(D)
slightly acidic
13
Which of the following statement is not correct about micronutrients? They
Answer
(D)
are the most abundat elements in plant leaves
14
A soil which consists of a mixture of and, silt and clay in equal quantities is described as
Answer
(D)
loam
15
Which of the following processes will not lead to the loss of nutrients from the soil?
Answer
(B)
mulching
16
The physical properties of soil include the following except
Answer
(E)
PH
17
Which of the following problems will not be considered before installing irrigation equipment in a farm?
Answer
(E)
build-up of pest and diseases
18
Which of the following is the source of energy used by green plants for photosynthesis?
Answer
(D)
sun
19
One of the limitation of machanization of farms is
Answer
(D)
reduction of farm labour
20
Which of the following farm operations cannot be mechanized?
Answer
(D)
seed-germination
21
Which of the following is not a disadvantages of wind power?
Answer
(B)
its source is the wind
22
Which of the following is not an effect of badly arranged farm?
Answer
(A)
efficient management
23
Which of the following should be checked daily before using a tractor?
Answer
(A)
engine oil
24
The botanical name of giant star grass is
Answer
(D)
cynodon plectostachyum
25
Cassava mosaic virus can be controlled by
Answer
(E)
growing resistant varieties
26
Which of the following crops does not require nursery preparation?
Answer
(D)
okra
27
To which of the following crops does the term ginning apply?
Answer
(D)
cotton
28
The symptoms of coffee leaf rust are
Answer
(A)
leaf spots, loss of vigour and death of the leaves
29
Breeding in self-pollination crops can be regarded as
Answer
(C)
inbreeding
30
An effective control method of the citrus moth is
Answer
(E)
timely harvesting of ripe fruits
31
Cassava and sugarcane are mainly propagated by
Answer
(D)
cutting
32
Control of weeds of forage crops can be carried out by the following methods except
Answer
(A)
cutting
33
The aim of a plant breeder in producing a crop variety which is tolerated to extreme of cold, drought, wind and heat is based on the
Answer
(A)
adaptation of the variety to climate conditions
34
The crop which can be processed into powered form for effective preservation include the following except
Answer
(E)
kolanut
35
The popular pasture crops in Nigeria include the following except
Answer
(E)
carpet grass
36
parboiling is carried out in the processing of rice in order to
Answer
(D)
reduce percentages of breakage
37
Which of the following is not a leafy vegetable?
Answer
(A)
lycopersicon esculentum
38
Which of the following is not a control measure of cowpea weevil?
Answer
(E)
innoculation of seeds
39
A pasture legume mixture cut and preserved but not dried for dry season feeding of livestock is referred to as
Answer
(D)
silage
40
The sites of microbial activities along the gastro-instentinal tract of ruminants include the following except
Answer
(A)
rumen
41
The gestation period of a cow is approximately
Answer
(D)
283 days
42
The following are important management practices in the husbandry of piglets except
Answer
(C)
provision of grass beddings for piglets
43
Liming of fish pond is carried out in order to
Answer
(E)
maintain the water level of the pond
44
The general symptoms of malnutrition in animals include the following except
Answer
(E)
increase in body size
45
The nymphs of lice reach maturity in about
Answer
(C)
three weeks
46
The interval from the beginning of one heat period to the another is known as
Answer
(E)
oestrus cycle
47
Which of the following pond maintenance operation will ensure adequate supply of oxygen and hygienic condition for fish in a pond?
Answer
(A)
deweeding
48
The part of the egg that prevents the yolk from being damaged by keeping the yolk at the centre of the egg is the
Answer
(D)
chalaza
49
the aims of breeding in farm animals include the following except
Answer
(D)
evolving new breeds of animals suitable for all purposes
50
Which of the following statements about ticks is not correct?
Answer
(B)
it has six pairs of legs
51
cracking of egg laid by a flock of layers in a farm can be corrected by
Answer
(D)
increasing the amount of calcim, phosphorus and vitamin D in their feed
52
bull calves intended for breeding are sometimes nose-ringed in order to
Answer
(E)
facilitate easy handling of the bull
53
The hormone that prevents abortion or expulsion of the foetus during pregnancy is
Answer
(B)
progesterone
54
Which of the following ingredients is required for the formation of egg-shell in poultry?
Answer
(A)
bone meal
55
One of the sexually-transmitted diseases in livestock is
Answer
(A)
brucellosis