WAEC - Agricultural Science (2008)

  • 1
    Which of the following benefits of agriculture is of least importance to the peasant farmer?
    Sagot
    (C)
    foreign exchange
  • 2
    Farmers who plant improved maize would harvest
    Sagot
    (B)
    a high yield of maize
  • 3
    Which of the following land tenure system allows the owner greatest freedom to dispose of the land as he wishes?
    Sagot
    (B)
    free-hold
  • 4
    Which of the following is not a government agricultural programme?
    Sagot
    (D)
    West Africa Rice Development
  • 5
    The practice of planting one type of annual crop each season is referred to as
    Sagot
    (C)
    mono-cropping
  • 6
    The most important use of land for agriculture production is
    Sagot
    (A)
    grazing paddocks
  • 7
    Which of the following biotic factors are usually used to control cassava mealbugs?
    Sagot
    (B)
    predators
  • 8
    The following are types of sedimentary rocks except
    Sagot
    (A)
    granites
  • 9
    A reddish coloured soil indicates the presence of
    Sagot
    (A)
    copper
  • 10
    The three most important physical factors that influence rock weathering are
    Sagot
    (B)
    particle size,hardness and degree of cementation
  • 11
    Which of the following statement is not true about waterlogged soils?
    Sagot
    (B)
    dentrifying bacteria are more active in such soil than nitrifying bacteria
  • 12
    Which of the following crops should be planted on a piece of land that has been repeatedly cropped with maize?
    Sagot
    (D)
    cowpea
  • 13
    sources of nitrogen to the soil include the following except
    Sagot
    (D)
    residues of burning activities
  • 14
    Which of the following statements about bush burning is false?
    Sagot
    (D)
    the heat generated increases the population of soil organisms
  • 15
    A farmer applied NPK 15:11:8 at planting. What is the percentage of potassium in the fertilizer?
    Sagot
    (A)
    23.53%
  • 16
    The following equipment can be used for irrigation except
    Sagot
    (D)
    siphon tube
  • 17
    Excessive drainage of soil water can be checked by the addition of adequate quantities of
    Sagot
    (D)
    compost manure
  • 18
    Considering all costs, the cheapest source of energy for domestic use is
    Sagot
    (B)
    sunlight
  • 19
    The implement used for pulverizing the soil is the
    Sagot
    (C)
    horrow
  • 20
    An incubator is important in supplying
    Sagot
    (B)
    heat for embryo develoment
  • 21
    A farm surveying equipment made of steel and used for measuring short distance is called
    Sagot
    (C)
    gunter's chain
  • 22
    Which of the following statement about farmstead planning is false?
    Sagot
    (A)
    administartive blocks should not be located close to the entrance of the farmstead
  • 23
    The term supplying in crop production means
    Sagot
    (C)
    replacing ungerminated seeds on seedbeds
  • 24
    During photosynthesis, green plants convert carbon dioxide to
    Sagot
    (B)
    carbohydrate
  • 25
    Perboiling in the processing of rice
    Sagot
    (C)
    reduces the percentage of breakage
  • 26
    The main reason for removing the barks of cassava tubers before processing the tuber is to
    Sagot
    (D)
    reduce the cyanide content of products
  • 27
    Tomato plants are staked for the following reasons except to
    Sagot
    (D)
    improve the taste
  • 28
    A vegetatively propagated citrus plant will produce fruits earlier than the one established from seeds because
    Sagot
    (C)
    it is more advanced at the time of establishment
  • 29
    swollen shoot disease of cocoa is caused by
    Sagot
    (A)
    virus
  • 30
    Groundnut grows best on a
    Sagot
    (A)
    well-drained,light sandy-loam soil
  • 31
    Which of the following characteristics is not true of a good pasture crop?
    Sagot
    (D)
    poor digestibility
  • 32
    The benefits of establishing forests do not include
    Sagot
    (D)
    shading of crops
  • 33
    Floriculture is a subdivision of horticulture which deals with the cultivation of
    Sagot
    (C)
    ornamental plants
  • 34
    Which of the following insect pests causes defoliation in crops?
    Sagot
    (B)
    grasshopper
  • 35
    Which of the following pesticides effectively control maize stem borers?
    Sagot
    (A)
    systematic insecticides
  • 36
    Which of the following combinations of practices best controls groundnut rosette disease?
    Sagot
    (D)
    early planting and spraying of insecticide
  • 37
    Determine the number of bottles of a herbicide required to spray 25 hectares of farmland, if one bottle is needed to prepare 100 litres and the diluted product product is applied at a rate of 20 litres per hectare.
    Sagot
    (B)
    5 bottles
  • 38
    The milk secreting organ in cattle is the
    Sagot
    (B)
    udder
  • 39
    A developing embryo derives its nutrition from the mother
    Sagot
    (A)
    through the blood vessels located in the placenta
  • 40
    Birds store food in the
    Sagot
    (A)
    crop
  • 41
    The following are examples of natural mating methods except
    Sagot
    (D)
    block mating
  • 42
    The milk collection vessel of the mammary gland is the
    Sagot
    (B)
    gland cistern
  • 43
    Fertile eggs will be produced by breeders if the
    Sagot
    (B)
    cocks are always kept with the hens
  • 44
    The rabbit is able to utilize forage because
    Sagot
    (A)
    it has an enlarged caecum that digests fibre
  • 45
    If feed efficiency for egg production is defined as feed consumed per 10 eggs, what will be the feed efficiency for a layer that laid 230 eggs and consumed 26kg feed?
    Sagot
    (B)
    1.13
  • 46
    When birds are fed on a ratio deficient in riboflavin,which of the following symptoms will they show?
    Sagot
    (C)
    curled-toe paralysis
  • 47
    Livestock are said to feed on the range when they eat
    Sagot
    (B)
    fresh herbage directly from the pasture
  • 48
    Which of the following practices is not a method of improving rangeland?
    Sagot
    (C)
    removal of weeds
  • 49
    Liverfluke infestation causes disturbance in lipid digestion because it
    Sagot
    (B)
    blocks the bile duct and reduces secretion of bile
  • 50
    A farmer noticed that one of his cows has high fever, blood-stained diarrhoea and often grinds its teeth. This shows that the cow is infected by
    Sagot
    (A)
    rinderpest
  • 51
    Temperature is an important factor in fish ponds because it
    Sagot
    (A)
    affects the metabolic processes in fish
  • 52
    An illegal method of harvesting fish is by the sue of
    Sagot
    (B)
    potassium cyanide
  • 53
    How can the offspring of a bull continue to be produced long after its death?
    Sagot
    (A)
    using the preserved semen for artificial insemination
  • 54
    A farm business makes profit when
    Sagot
    (C)
    total revenue exceed total cost
  • 55
    Agricultural business is difficult to insure in West Africa mainly because
    Sagot
    (B)
    agricultural production is highly risky