WAEC - Agricultural Science (1989)

  • 1
    Peasant farmers sell almost all their produce immediately after harvesting because
    Vastaus
    (B)
    there are inadequate storage facilities
  • 2
    The commonest method of land tenure in Nigeria is
    Vastaus
    (B)
    inheritance
  • 3
    Which of the following constitutes a direct monetary cash assistance from government to farmers?
    Vastaus
    (D)
    loans
  • 4
    The cross-section of a segment of soil showing the horizons or layers is known as the soil
    Vastaus
    (E)
    profile
  • 5
    If a crop requires 1.5 kg phosphorus per hectare, how many kg of manure will be required per hectare if 1 kg manure contains 0.49 kg of phosphorus?
    Vastaus
    (E)
    30.61
  • 6
    The factor that does not influence land use is
    Vastaus
    (C)
    population graph
  • 7
    Which of the following environmental factors is likely to have the greatest influence on crop production in Nigeria?
    Vastaus
    (D)
    moisture
  • 8
    The process whereby rocks are broken down into small particles through both physical and chemical factors is known as
    Vastaus
    (E)
    weathering
  • 9
    The parent material of a soil is formed from the disintegration of
    Vastaus
    (D)
    rock
  • 10
    Nitrogen is made available to plants in the form of nitrates through the process of
    Vastaus
    (E)
    nitrification and ammonification
  • 11
    Which of the following is not an effect of burning on the soil?
    Vastaus
    (A)
    increasing the organic matter in the soil
  • 12
    The function of soil micro-organisms include the following except
    Vastaus
    (E)
    filtration of soil water for plant use
  • 13
    Slate is derived from
    Vastaus
    (C)
    shale
  • 14
    The following are advantages of the sprinkler method of irrigation except
    Vastaus
    (E)
    method may be difficult for local farmers to use
  • 15
    Rhizobium supplies nitrogen to leguminous plants by
    Vastaus
    (C)
    fixing atmospheric nitrogen
  • 16
    The advantage of providing drainage ditches in farms is that it
    Vastaus
    (E)
    is easily adopted by samll scale farmers
  • 17
    Which of the following sources of farm power cannot be effectively used for processing agricultural products?
    Vastaus
    (A)
    animals
  • 18
    The instrument used to measure the relative humidity is
    Vastaus
    (C)
    hygrometer
  • 19
    The most important limitation of agricultural mechanization is
    Vastaus
    (A)
    small holdings
  • 20
    The best tool(s) a farmer should use to measure out a large farm accurately include(s) the
    Vastaus
    (B)
    measuring tape and ranging poles
  • 21
    The distance between two successive yam mounds should be about
    Vastaus
    (B)
    1.00 m
  • 22
    The desirable characteristics of forage crops include the following except
    Vastaus
    (E)
    poor reproductive ability
  • 23
    The growing of both forest and agricultural crops on the same piece of land is termed
    Vastaus
    (D)
    taungya system
  • 24
    Which of the following is not an effect on man of the various preventive and control measures of diseases and pests of crops?
    Vastaus
    (E)
    poor utilization
  • 25
    The units of inheritance which determine the various characteristics of crop are called
    Vastaus
    (C)
    genes
  • 26
    Which of the following crops is a raw material for production of chocolate?
    Vastaus
    (D)
    cocoa
  • 27
    In the establishment of pastures, it is best to
    Vastaus
    (C)
    plant a mixture of grasses and legumes
  • 28
    A forest established for watershed management will perform the following functions except
    Vastaus
    (B)
    controlling fish population
  • 29
    The disease which most attacks groundnut is called
    Vastaus
    (A)
    rosette
  • 30
    The process of meiosis in plants ensures the production of reproduction of reproductive cells with
    Vastaus
    (B)
    half the number of chromosomes of the parent plant
  • 31
    Why should a seed-producing farmer spray an insecticide on his crops only when the bees are not around?
    Vastaus
    (C)
    bees are important for pollination of his crops
  • 32
    The average seed rate for maize is 25 kg per hectare. Allowing for a seed wastage of 5 per cent.How many kilogram of seeds would be required in planting 10 hectares of farmland?
    Vastaus
    (E)
    262.5
  • 33
    Thrips cause serious mechanical damages to crops by their
    Vastaus
    (A)
    feeding activities on flowers, leaves and fruits
  • 34
    The expression of a gene in the phenotype irrespective of whether the cell is homozygous or heterozygous is known as
    Vastaus
    (E)
    dominance
  • 35
    Vegetables propagation can be carried out through the following processes except
    Vastaus
    (A)
    seedling
  • 36
    Contact insecticides are used to control
    Vastaus
    (C)
    leaf beetles of legumes
  • 37
    The part of the ruminant stomach from which digestive juices secreted is the
    Vastaus
    (E)
    abomasum
  • 38
    At which of the following ages are gilts normally mated?
    Vastaus
    (A)
    8 - 12 months
  • 39
    Which of the following breeds of cattle is regarded as the best dairy breed in Nigeria?
    Vastaus
    (E)
    white fulani
  • 40
    The symptoms of vitamin deficiency diseases in livestock includes the following
    Vastaus
    (D)
    improved fertility
  • 41
    A protozoan diseases of livestock not transmitted by a vector is
    Vastaus
    (A)
    coccidiosis
  • 42
    The best method(s) of regulating fish capture is/are
    Vastaus
    (B)
    quota and mesh-size control
  • 43
    Which of the following is not a factor of improvement in breeding cattle?
    Vastaus
    (E)
    back-fat thickness
  • 44
    Which of the following is not a factor of improvement in breeding cattle?
    Vastaus
    (A)
    bloat
  • 45
    The act of giving birth in rabbits is known as
    Vastaus
    (C)
    kindling
  • 46
    The exotic breeds of rabbits found in Nigeria include the following except
    Vastaus
    (E)
    rhode island red
  • 47
    Minerals such as contained in oyster shell help animals to
    Vastaus
    (B)
    develop their bones and teeth
  • 48
    Some of the by-products of fish include the following except
    Vastaus
    (E)
    leather
  • 49
    The commonest ectoparasites of birds are
    Vastaus
    (A)
    lice
  • 50
    The following factors should be considered when selecting a farm animal irrespective of the use management and cost except
    Vastaus
    (C)
    health
  • 51
    Which of the following is not a factor affecting fertility in farm animals?
    Vastaus
    (E)
    lactation rate
  • 52
    Low fibre and high energy feeds are classified as
    Vastaus
    (B)
    concentrates
  • 53
    Which of the following is not used for identification purpose in livestock?
    Vastaus
    (E)
    shearing
  • 54
    the factors that can predispose animals to diseases include the following except
    Vastaus
    (C)
    immunity
  • 55
    The following are factors of agricultural production except
    Vastaus
    (A)
    farmstead