WAEC - Agricultural Science (1991)

  • 1
    The most important soil micro-organisms concerned with decay and nutrients-recycling are
    پاسخ دهید
    (A)
    bacteria and fungi
  • 2
    the nutrient content of soil may be influenced by the following except
    پاسخ دهید
    (A)
    harrowing
  • 3
    What happens to the nitrogen and sulphur contents of vegetation when burning is used as a means of lans clearing? They
    پاسخ دهید
    (A)
    are released by burning and lost as gases
  • 4
    Which of the following does not occur as a result of poor drained soil?
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    (E)
    increase in oxygen level of the soil
  • 5
    The different types of soil are determined by the relative amounts of each of the following components except
    پاسخ دهید
    (A)
    rocks
  • 6
    Fertilizers that usually contain one nutrient which can be used directly by plants are commonly called
    پاسخ دهید
    (E)
    straight fertilizers
  • 7
    A soil with particles of less than 0.002mm in diameter is referred to as
    پاسخ دهید
    (A)
    clay
  • 8
    Which of the following factors does not bring about soil formation?
    پاسخ دهید
    (D)
    sunshine
  • 9
    Plant micro-nutrients include the following except
    پاسخ دهید
    (A)
    sulphur
  • 10
    Most crop plants do not survive in water-logged soils because
    پاسخ دهید
    (E)
    oxygen has been displaced to its deficiency for crops
  • 11
    If the ginning percentage of the samaru variety of cotton is 35, what will be the amount of raw cotton obtained from a 6 hectare farm with a yield of 330 kg seed cotton per hectare?
    پاسخ دهید
    (E)
    6930 kg
  • 12
    Which of the following factors does not affect the distribution of pasture grasses?
    پاسخ دهید
    (A)
    type of species
  • 13
    Which of the following is not a reason for the government to encourage the planting of trees
    پاسخ دهید
    (E)
    increasing output of mineral oil
  • 14
    Which of the following crops does not require nursery?
    پاسخ دهید
    (E)
    maize
  • 15
    The causal organism of damping-oil disease of okra is a
    پاسخ دهید
    (E)
    fungus
  • 16
    Which of the following crops cannot be easily improved by cross-breeding?
    پاسخ دهید
    (E)
    yam
  • 17
    The commonest method of vegetative propagation is by
    پاسخ دهید
    (C)
    cutting
  • 18
    I. spreading and perennial plant with long and rapid growing stems. II. height of plant about 1.2m III. resistance to dry weather. Which of the following pasture grasses has the description given above?
    پاسخ دهید
    (E)
    gaint star grass
  • 19
    The annual burning of forest areas encourages
    پاسخ دهید
    (B)
    deforestation
  • 20
    Which of the following crops is not correctly grouped with its industrial product?
    پاسخ دهید
    (E)
    orange-margarine
  • 21
    The objective of crops improvement programmes is to produce the following except
    پاسخ دهید
    (E)
    crops resistant to all pests
  • 22
    The bacterial blight of cotton is also known as
    پاسخ دهید
    (A)
    black arm
  • 23
    Staking is very essential in the cultivation of
    پاسخ دهید
    (D)
    tomato and yam
  • 24
    Vetok 85 is used to control
    پاسخ دهید
    (C)
    stem borers
  • 25
    What symptom can be used to identify maize rust?
    پاسخ دهید
    (B)
    raised brown spots on the leaves
  • 26
    I.Pale leaves II. Shrunken new leaves III. Water-soaked bark which peels off IV. Gum-like exudation from the cracks on the bark. Which of the following diseases of citrus has the symptoms listed above?
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    (B)
    gum-mosis
  • 27
    Which of the following is not a breed of cattle?
    پاسخ دهید
    (D)
    sokoto red
  • 28
    Which of the following may cause disease in a fish pond?
    پاسخ دهید
    (C)
    poor management practices
  • 29
    Which of the following may cause disease in a fish pond?
    پاسخ دهید
    (C)
    poor management practices
  • 30
    The act of parturition in rabbits is called
    پاسخ دهید
    (A)
    kindling
  • 31
    The factor affecting growth and development of young animals from birth to maturity include the following except
    پاسخ دهید
    (B)
    size of the head
  • 32
    Which of the following is not a sign of animal approaching parturition?
    پاسخ دهید
    (E)
    drop in milk production
  • 33
    Daily management routines in poultry include the following except
    پاسخ دهید
    (E)
    debeaking
  • 34
    Basal feeds have a high proportion of easily digestible
    پاسخ دهید
    (E)
    carbohydrates
  • 35
    The length of oestrus cycle (in days) in goat is
    پاسخ دهید
    (B)
    18 - 21
  • 36
    When a cockerel is castrated, it becomes a
    پاسخ دهید
    (E)
    pullet
  • 37
    Forages cut fresh and preserved in silo or pit are referred to as
    پاسخ دهید
    (B)
    silage
  • 38
    Which of the following is not a method of improving range land?
    پاسخ دهید
    (E)
    overgrazing
  • 39
    Which of the following characteristics is not correct of pigs?
    پاسخ دهید
    (E)
    source of skin
  • 40
    The best control ensure for rinderpest disease in cattle is
    پاسخ دهید
    (E)
    vaccination
  • 41
    Management practices of established pasture include the following except
    پاسخ دهید
    (B)
    transplanting
  • 42
    Temperature is an important factor which is monitored in fish ponds because
    پاسخ دهید
    (C)
    it affects the metabolic processes in fish
  • 43
    Diarrhoea tainted with blood is a symptom of
    پاسخ دهید
    (B)
    coccidiosis
  • 44
    The major cause of spoilage in fresh fish is
    پاسخ دهید
    (D)
    bacterial attack
  • 45
    Selection of breeding males based on the performance of their female relatives is known as
    پاسخ دهید
    (A)
    sib-selection
  • 46
    A farmer uses his agricultural loans for the following except
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    (E)
    marketing his crops
  • 47
    What is the effect of stability of market price on a produce? The
    پاسخ دهید
    (A)
    profit of the producer would be constant if there is no increase in cost inputs
  • 48
    From which of the following sources can agricultural credits be more easily obtained by peasant farmers?
    پاسخ دهید
    (E)
    credit and thrift socities
  • 49
    Net worth statement can be referred to as
    پاسخ دهید
    (A)
    balance sheet
  • 50
    Which of the following activities is correct about agricultural extension agent?
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    (B)
    educating farmers on the use of improved inputs and techniques in agriculture