WAEC - Agricultural Science (2007)

  • 1
    Which of the following agricultural raw material would a glue-processing industry require?
    Odpověď
    (C)
    cassava
  • 2
    Perishability of farm produce can be minimized through
    Odpověď
    (A)
    modification of the crop genetic compostion
  • 3
    In which of the following activities is land not used for agricultural purposes?
    Odpověď
    (C)
    ranching
  • 4
    Which of the following statements about farm settlement schemes is false? They are set up
    Odpověď
    (D)
    for research and publicity
  • 5
    Water-logged soils impede good crop growth and development because
    Odpověď
    (B)
    crop roots are deprived of sufficient oxygen
  • 6
    The relative proportion of each fraction of soil in a soil sample determines its
    Odpověď
    (A)
    texture
  • 7
    Which of the following materials cannot be used for liming?
    Odpověď
    (D)
    urea
  • 8
    Which of the following statements about soil water is true?
    Odpověď
    (D)
    crops utilize capillary water in the soil
  • 9
    Which of the following soil elements becomes readily available at pH values above 8?
    Odpověď
    (B)
    manganese
  • 10
    Micro-nutrients are likely to be deficient in
    Odpověď
    (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
    Odpověď
    (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?
    Odpověď
    (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
    Odpověď
    (A)
    I
  • 14
    Which of the following statements is not an advantage of drainage? It
    Odpověď
    (B)
    supplies moisture for plant growth
  • 15
    The problems associated with farm irrigation do not include
    Odpověď
    (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?
    Odpověď
    (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?
    Odpověď
    (A)
    I and II
  • 18
    The most versatile source of farm power in West Africa is
    Odpověď
    (B)
    animal
  • 19
    Silos ensure good storage because
    Odpověď
    (B)
    of the air-tight environment created
  • 20
    Which of the following statement about the advantages of farm mechanization is not true? It
    Odpověď
    (B)
    improves soil structure
  • 21
    The standard length of a Gunter's chain is approximately
    Odpověď
    (A)
    20 m
  • 22
    A farmstead is best described as
    Odpověď
    (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
    Odpověď
    (D)
    II,III and IV only
  • 24
    Layering is advantageous because
    Odpověď
    (C)
    possibl failure of fertgilization is avoided
  • 25
    Drying of harvested crops is necessary because it
    Odpověď
    (B)
    reduces moisture content and stores better
  • 26
    Which of the following factors will not influence the yield of crops?
    Odpověď
    (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?
    Odpověď
    (C)
    196.0 kg
  • 28
    Delayed harvesting of maize may result in
    Odpověď
    (B)
    high incidence of pest infestation
  • 29
    Tomato plants are primarily staked to
    Odpověď
    (C)
    raise fruits from the ground
  • 30
    Which of the following crops does not require nursery?
    Odpověď
    (B)
    abelmuscus esculentus
  • 31
    An erect tropical perennial grass which grows to 3 - 6 metres tall and has broad hairy leaves is the
    Odpověď
    (A)
    elephant grass
  • 32
    Deforestation will eventually lead to
    Odpověď
    (C)
    loss of soil organic matter
  • 33
    Golden brown lesions on peeled yam tuber indicate infection by
    Odpověď
    (C)
    fungi
  • 34
    The eradication of mealy bugs is an effective control of
    Odpověď
    (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
    Odpověď
    (A)
    improved quality of farm produce
  • 36
    Biological methods of weed control do not include
    Odpověď
    (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?
    Odpověď
    (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
    Odpověď
    (C)
    50% brown coat coloured offspring
  • 39
    Which of the following structures is not connected to the urethra of a bull?
    Odpověď
    (D)
    rectum
  • 40
    Ruminants do not normally show deficiency symptoms of vitamin B complex because
    Odpověď
    (D)
    the bacteria in their rumen synthesize the vitamins
  • 41
    Fluids from the cowpers and prostate gland help in the following except
    Odpověď
    (B)
    provision of nuritents for spermatozoa survival
  • 42
    The gestation period of ewe is
    Odpověď
    (D)
    149 days
  • 43
    The hormone that influences the movement of the pelvic ligaments during parturition in farm animals is known as
    Odpověď
    (A)
    relaxin
  • 44
    In which of the following systems of poultry management can the spread of diseases be kept to a minimum?
    Odpověď
    (A)
    battery cage
  • 45
    A wall is usually constructed in piggeries to
    Odpověď
    (C)
    provide baths for pigs
  • 46
    Which of the following groups of macro-nutrients is a constituent of protein?
    Odpověď
    (A)
    nitrogen,phosphorus and sulphur
  • 47
    Which of the following livestock diseases affects the reproductive system?
    Odpověď
    (B)
    brucellosis
  • 48
    When poultry flock, the birds keep passing out green, foul-smelling faeces with nervous symptoms, it means that the farmer
    Odpověď
    (B)
    neglected to treat them againt gumboro disease
  • 49
    When a farmer tries to eradicate snails from pastures, he is attempting to control
    Odpověď
    (D)
    liver flukes
  • 50
    Fertilizing a fish pond with compost manure would most likely
    Odpověď
    (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.
    Odpověď
    (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.
    Odpověď
    (C)
    43%
  • 53
    The demand for agricultural produce is generally
    Odpověď
    (A)
    elastic
  • 54
    Agricultural credits should be put to the following uses except
    Odpověď
    (B)
    meeting family needs
  • 55
    Which of the following statements is not true about profit and loss account of a farm?
    Odpověď
    (B)
    all expenses and purchases are listed on the right-hand side