WAEC - Agricultural Science (2007)

  • 1
    Which of the following agricultural raw material would a glue-processing industry require?
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    (C)
    cassava
  • 2
    Perishability of farm produce can be minimized through
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    (A)
    modification of the crop genetic compostion
  • 3
    In which of the following activities is land not used for agricultural purposes?
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    (C)
    ranching
  • 4
    Which of the following statements about farm settlement schemes is false? They are set up
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    (D)
    for research and publicity
  • 5
    Water-logged soils impede good crop growth and development because
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    (B)
    crop roots are deprived of sufficient oxygen
  • 6
    The relative proportion of each fraction of soil in a soil sample determines its
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    (A)
    texture
  • 7
    Which of the following materials cannot be used for liming?
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    (D)
    urea
  • 8
    Which of the following statements about soil water is true?
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    (D)
    crops utilize capillary water in the soil
  • 9
    Which of the following soil elements becomes readily available at pH values above 8?
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    (B)
    manganese
  • 10
    Micro-nutrients are likely to be deficient in
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    (D)
    soils with low pH
  • 11
    Chlorosis with characteristic parallel white or yellow streaks observed along the veins of leaves is a deficiency symptom of
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    (B)
    magnesium
  • 12
    I. Allowing land to fallow II. Applying organic fertilizer III. Practicing monoculture IV. Growing legumes. Which of the following combinations will help to improve soil fertility status?
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    (D)
    I,II and IV only
  • 13
    I. Allowing land to fallow II. Applying organic fertilizer III. Practicing monoculture IV. Growing legumes. The spread of diseases and pests can be checked by
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    (A)
    I
  • 14
    Which of the following statements is not an advantage of drainage? It
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    (B)
    supplies moisture for plant growth
  • 15
    The problems associated with farm irrigation do not include
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    (C)
    continuous supply of irrigation water
  • 16
    I. Burning of trash II. Slashing of undergrowth III. Seed bed preparation IV. Soil tillage. Which of the following options gives the correct sequence of land preparation for planting yam?
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    (B)
    II,I,IV and III
  • 17
    I. Burning of trash II. Slashing of undergrowth III. Seed bed preparation IV. Soil tillage. Which of the following practices will enhance loss of soil water?
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    (A)
    I and II
  • 18
    The most versatile source of farm power in West Africa is
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    (B)
    animal
  • 19
    Silos ensure good storage because
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    (B)
    of the air-tight environment created
  • 20
    Which of the following statement about the advantages of farm mechanization is not true? It
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    (B)
    improves soil structure
  • 21
    The standard length of a Gunter's chain is approximately
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    (A)
    20 m
  • 22
    A farmstead is best described as
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    (D)
    farmer's abode
  • 23
    Which of the following processes in plants are directly affected by high temperature? I. Water absorption II. Photosynthesis III. Respiration IV. Photoperiodism
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    (D)
    II,III and IV only
  • 24
    Layering is advantageous because
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    (C)
    possibl failure of fertgilization is avoided
  • 25
    Drying of harvested crops is necessary because it
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    (B)
    reduces moisture content and stores better
  • 26
    Which of the following factors will not influence the yield of crops?
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    (D)
    wind direction and speed
  • 27
    If the seed rate of guinea corn is 5.6 kg per hectare, what will be the amount of seed required for planting 35 acres of farm land?
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    (C)
    196.0 kg
  • 28
    Delayed harvesting of maize may result in
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    (B)
    high incidence of pest infestation
  • 29
    Tomato plants are primarily staked to
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    (C)
    raise fruits from the ground
  • 30
    Which of the following crops does not require nursery?
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    (B)
    abelmuscus esculentus
  • 31
    An erect tropical perennial grass which grows to 3 - 6 metres tall and has broad hairy leaves is the
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    (A)
    elephant grass
  • 32
    Deforestation will eventually lead to
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    (C)
    loss of soil organic matter
  • 33
    Golden brown lesions on peeled yam tuber indicate infection by
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    (C)
    fungi
  • 34
    The eradication of mealy bugs is an effective control of
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    (B)
    swollen shoot of cocoa
  • 35
    The side effects of the various preventive and control measures of pests and diseases of crops include the following except
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    (A)
    improved quality of farm produce
  • 36
    Biological methods of weed control do not include
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    (D)
    uprooting the weeds
  • 37
    Assuming that in sheep, the allele for black coat colour is dominant over that for brown coat colour. What percentage of the F generation will have black colour when two heterozygotes are crossed?
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    (B)
    75%
  • 38
    Assuming that in sheep, the allele for black coat colour is dominant over that for brown coat colour. Crossing a heterzygote black with a homozygote brown will produce
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    (C)
    50% brown coat coloured offspring
  • 39
    Which of the following structures is not connected to the urethra of a bull?
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    (D)
    rectum
  • 40
    Ruminants do not normally show deficiency symptoms of vitamin B complex because
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    (D)
    the bacteria in their rumen synthesize the vitamins
  • 41
    Fluids from the cowpers and prostate gland help in the following except
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    (B)
    provision of nuritents for spermatozoa survival
  • 42
    The gestation period of ewe is
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    (D)
    149 days
  • 43
    The hormone that influences the movement of the pelvic ligaments during parturition in farm animals is known as
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    (A)
    relaxin
  • 44
    In which of the following systems of poultry management can the spread of diseases be kept to a minimum?
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    (A)
    battery cage
  • 45
    A wall is usually constructed in piggeries to
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    (C)
    provide baths for pigs
  • 46
    Which of the following groups of macro-nutrients is a constituent of protein?
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    (A)
    nitrogen,phosphorus and sulphur
  • 47
    Which of the following livestock diseases affects the reproductive system?
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    (B)
    brucellosis
  • 48
    When poultry flock, the birds keep passing out green, foul-smelling faeces with nervous symptoms, it means that the farmer
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    (B)
    neglected to treat them againt gumboro disease
  • 49
    When a farmer tries to eradicate snails from pastures, he is attempting to control
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    (D)
    liver flukes
  • 50
    Fertilizing a fish pond with compost manure would most likely
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    (D)
    increase phytoplankton and increase fish yield
  • 51
    A farmer sold all his harvested maize totaling 260 kg at N5.50 per kg, thereby making a profit of N430.00. Calculate the production cost of maize per kg.
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    (B)
    N3.85
  • 52
    A farmer sold all his harvested maize totaling 260 kg at N5.50 per kg, thereby making a profit of N430.00. Determine the percentage profit per kg of maize sold.
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    (C)
    43%
  • 53
    The demand for agricultural produce is generally
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    (A)
    elastic
  • 54
    Agricultural credits should be put to the following uses except
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    (B)
    meeting family needs
  • 55
    Which of the following statements is not true about profit and loss account of a farm?
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    (B)
    all expenses and purchases are listed on the right-hand side