WAEC - Agricultural Science (2009)

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