WAEC - Agricultural Science (2009)

  • 1
    The most important contribution of agriculture to mankind is the provision of
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    (D)
    food
  • 2
    An advantage of commercial agriculture is that it
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    (C)
    produces high returns
  • 3
    Which of the following statements about communal land tenure system is true?
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    (A)
    it gives the owner complete freedom on the land
  • 4
    Agricultural land use is negatively affected by
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    (A)
    type of soil
  • 5
    The practice of growth both food and forage crops simultaneously on the same piece of land is called
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    (B)
    ley farming
  • 6
    The use of land for agricultural purpose involves the following except
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    (C)
    road construction
  • 7
    The natural grasslands of West Africa are generally located in the
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    (B)
    guinea savanna
  • 8
    The following processes in soil formation are caused by biotic factors except
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    (D)
    soil disintegration by dehydration
  • 9
    Which of the following rocks is not formed from pre-existing rocks?
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    (B)
    granite
  • 10
    Chemical weathering is fastest in
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    (A)
    cool weather
  • 11
    It is not advisable to apply fresh farmyard manure because
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    (A)
    its heat of decomposition may cause scorching of plants
  • 12
    Magnesium deficiency in crops can be corrected by the application of
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    (A)
    dolomite
  • 13
    The atmosphere gains carbon dioxide through the following ways except
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    (C)
    photosynthesis in plants
  • 14
    Controlled burning has the advantage of
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    (B)
    inducing re-growth of pasture grasses
  • 15
    Which of the following fertilizers should be applied for good plant growth after prolonged use of sulphate of ammonia on a neutral soil?
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    (B)
    lime
  • 16
    Which of the following statements indicate advantages of sub-surface irrigation? I. Low operation cost once established II. Does not disturb the movement of implements III. Permits efficient use of water IV. easily floods the field
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    (B)
    II,III and IV only
  • 17
    The removal of excess water from the sub-soil is known as
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    (B)
    drainage
  • 18
    The best source of farm power for agricultural production is
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    (A)
    human power
  • 19
    The greatest disadvantage of using a bulldozer in land clearing is that it
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    (A)
    removes the fertile top soil along with the vegetation
  • 20
    Mechanization is difficult to practice where the
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    (A)
    land is fragmented
  • 21
    Which of the following equipment is not used in farm surveying?
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    (D)
    pick axe
  • 22
    Farm surveying is important because it determines
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    (B)
    size of farmland
  • 23
    Bush fallowing is necessitated by
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    (B)
    reduction in soil fertility
  • 24
    A well fermented and dried coffee seed is said to be
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    (B)
    graded
  • 25
    A bag of fertilizer had a ratio of 0:10:0 written on it. This means that the fertilizer contains
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    (C)
    0 kg of nitrogen, 10 kg of phosphate and 0 kg of potash
  • 26
    In crop rotation, deep-rooted crops should follow shallow-rooted crops because deep-rooted crops
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    (C)
    feed from different soil layers
  • 27
    If a crop is planted at a spacing of 100cm x 50cm. Calculate the plant population required for an hectare of farm land.
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    (D)
    20,000
  • 28
    The term hermetic storage of grains means keeping grains in
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    (A)
    air-tight containers
  • 29
    A disadvantage of vegetatively propagated crops is that they
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    (C)
    do not withstand harsh conditions
  • 30
    Which of the following statements about mulches is true? They
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    (A)
    include paper and plolythene sheets
  • 31
    Which of the following crops is bet harvested using a combine harvester?
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    (A)
    maize
  • 32
    Which of the following crops produces latex?
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    (C)
    rubber
  • 33
    What will be the following effect of establishing a grass with centrosema spp. in a pasture? The
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    (D)
    forage yield will be high
  • 34
    Which of the following is not an economic importance of forests? They serve as source of
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    (D)
    domestic animals
  • 35
    The twisting, wrinkling and mottling of leaves are symptoms of
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    (B)
    viral diseases
  • 36
    An example of biological control of pests is
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    (A)
    using lady bird beetles to feed on cytoplasm
  • 37
    Edible seeds with sticky covering and hooks are most likely to be dispersed by
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    (C)
    animal
  • 38
    Hereditary characteristics are passed from parents to offspring through the
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    (C)
    gene
  • 39
    Embryonic membranes do not include
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    (A)
    uterus
  • 40
    The digestion of plant fibre is non-ruminant herbivores takes place in the
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    (B)
    caecum and colon
  • 41
    Which of the following hormones is responsible for the relaxation of the pelvic ligaments and cervix during parturition?
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    (C)
    oxytocin
  • 42
    The signs of heat in animals include the following except
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    (D)
    increased appetite
  • 43
    Which of the following is not an abiotic condition that affects livestock production?
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    (D)
    predators
  • 44
    Cows should not be allowed to eat plenty of young fresh pastures because they will
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    (B)
    develop bloat
  • 45
    In commercial egg production, the most effective management system is
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    (C)
    battery
  • 46
    Which of the following statements is true of a pig which has only one testis?
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    (B)
    it can still produce viable sperm
  • 47
    The ingredient which is not a major source of minerals in animal feeds is
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    (D)
    palm kernal meal
  • 48
    If a soyabean meal contains 45% crude protein, what quantity of it should be provided to laying flock to supply 5.00 kg of protein?
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    (D)
    2.25 kg
  • 49
    The following are common grasses in the rangeland except
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    (B)
    calopogonium mucunoides
  • 50
    Disease of animals that can also be transferred to humans are
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    (C)
    zoonotic
  • 51
    Poultry showing difficulty in breathing and loss of appetite are under the attack of
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    (B)
    aspergillosis
  • 52
    The major cause of spoilage in fresh fish is
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    (D)
    bacterial attack
  • 53
    Which of the following statement about a good fish pond is true?
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    (C)
    it must have low concentration of dissolved salts
  • 54
    The mechanical introduction of semen into the vagina of a female animal is termed
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    (C)
    artificial insemination
  • 55
    The most important input contributed by farm family is
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    (C)
    labour