JAMB - Agricultural Science (2020)

  • 1
    Which of the following is not the role of government in agricultural production?
    답변
    (D)
    provision of labour
  • 2
    Agricultural extension programme would succeed in disseminating new ideas to farmers except if the programme
    답변
    (D)
    is not kept flexible to contemporary technology
  • 3
    Which of the following is not a quality for selecting livestock?
    답변
    (C)
    mortality rate
  • 4
    Investments with long life span in agricultural economics are otherwise known as
    답변
    (A)
    capital
  • 5
    Under normal circumstances, the concept of consumer sovereignty in agriculture implies that
    답변
    (A)
    the consumer and not the farmer determines what to produce
  • 6
    A farmer uses his agricultural loans for the following except
    답변
    (A)
    marketing his crops
  • 7
    Which of the following activities is correct about agricultural extension agent?
    답변
    (B)
    educating farmers on the use of improved inputs and techniques in agriculture
  • 8
    Which of the following is not a breed of cattle?
    답변
    (D)
    sokoto red
  • 9
    Which of the following may cause disease in a fish pond?
    답변
    (C)
    poor management practices
  • 10
    Which of the following is not a sign of animal approaching parturition?
    답변
    (D)
    drop in milk productio
  • 11
    The length of oestrus cycle (in days) in goat is
    답변
    (B)
    18 - 21
  • 12
    Daily management routines in poultry include the following except
    답변
    (B)
    debeaking
  • 13
    When a cockerel is castrated, it becomes a
    답변
    (D)
    capon
  • 14
    Which of the following characteristics is not correct of pigs?
    답변
    (D)
    source of land
  • 15
    The best control ensure for rinderpest disease in cattle is
    답변
    (B)
    vaccination
  • 16
    Which of the following is not an advantage of drip-irrigation?
    답변
    (D)
    its efficiency on water distribution in steep slopes is poor
  • 17
    The windmill is normally used as a source of power in
    답변
    (A)
    pumping well water
  • 18
    The most appropriate farm machinery for breaking soil is the
    답변
    (B)
    plough
  • 19
    One of the limitation of mechanization of farms is
    답변
    (A)
    reduction in the cost of production
  • 20
    The physical properties of soil include the following except
    답변
    (A)
    PH
  • 21
    Which of the following is not component of soil?
    답변
    (D)
    texture
  • 22
    The soil nutrient which is important as a constituent of plant proteins and hormones is
    답변
    (B)
    sulphur
  • 23
    During the processes of soil formation, the cracks or crevices that are first noticed on the rocks are normally caused by
    답변
    (D)
    temperature
  • 24
    A soil with the PH range of 6.1 to 6.9 can be described as
    답변
    (D)
    slightly acidic
  • 25
    The main purpose of including leguminous crops in pastures is to serve as a source of
    답변
    (A)
    proteins
  • 26
    Which of the following is not normally a pasture crop?
    답변
    (A)
    mucuna
  • 27
    The damage to the stem of maize plants resulting in hollowness and lodging is most likely caused by
    답변
    (C)
    stem borers
  • 28
    The most common soil mineral found in all crystalline rocks and a main constituent of granite and sandstone is
    답변
    (B)
    quartz
  • 29
    A soil with pH2 can be described as
    답변
    (C)
    highly acidic
  • 30
    Which of the following will be responsible for the poor yield of fertile soil in a high rainfall area?
    답변
    (A)
    leaching of soil nutrients
  • 31
    Crop rotation has the following effects on the soil except
    답변
    (D)
    predisposing soil to leaching
  • 32
    Which of the following is an example of igneous rock?
    답변
    (D)
    granite
  • 33
    A biotic factor influencing agricultural production is
    답변
    (B)
    predator
  • 34
    Which of the following nutrient element is a macro-nutrient?
    답변
    (A)
    phosphorus
  • 35
    In encouraging farmers to produce more of a particular crop, the Nigerian government has helped farmers in marketing that crop through the establishment of
    답변
    (C)
    marketing boards
  • 36

    The diagram above shows parts of a plough.
    Study it and answer this question.
    The part labelled I in the diagram is the
     

    답변
    (D)
    mould board
  • 37

    Study the diagram above and answer question
    The crop associated with the diagram above is?
     

    답변
    (C)
    Hevea brasiliensis
  • 38

    During which of the following plant propagation methods is the tool represented used?

    답변
    (C)
    Budding
  • 39

    Study the diagram above and answer question
    The farm tool associated with the diagram above is
     

    답변
    (A)
    Knife
  • 40

    From the curve above, at what point is it advisable for the farmer to stop further addition of input?
     

    답변
    (C)
    III
  • 41
    The primary role of agriculture is the provision of
    답변
    (C)
    food for man and his animals
  • 42
    In subsistence agriculture,
    답변
    (B)
    surplus produced is small
  • 43
    The recommended agricultural practice in farm settlement scheme is
    답변
    (C)
    mixed farming
  • 44
    Government agricultural policies include the following except
    답변
    (D)
    increasing the number of peasant farmers
  • 45
    Agricultural uses of land include
    답변
    (A)
    silviculture
  • 46
    Capital in agriculture includes the following item except
    답변
    (C)
    labour
  • 47
    The quantity of rice that a consumer is willing and able to buy during a given period is simply the consumer's
    답변
    (A)
    demand for rice
  • 48
    Artificial scarcity of agricultural produce is often caused by the following marketing agents except
    답변
    (A)
    farmers
  • 49
    Given a normal situation, what effect will an increase in the supply of cowpea have on its market price? The price
    답변
    (B)
    decreases
  • 50
    Marketing processes do not include
    답변
    (A)
    production
  • 51
    Which of the following is not a source of farm power?
    답변
    (D)
    plough
  • 52
    Farm surveying can be defined as the
    답변
    (C)
    making measurements on land from which maps are drawn
  • 53
    Which of the following sources of farm power is most flexible and adaptable to farm operations?
    답변
    (C)
    human power
  • 54
    The most efficient irrigation method on large scale farms involve the use of
    답변
    (A)
    overhead irrigation facilities
  • 55
    What is the main use of a gunter's chain?
    답변
    (A)
    taking measurement of distance
  • 56
    An example of grain legume is
    답변
    (A)
    pea
  • 57
    Cassava is mainly propagated by
    답변
    (D)
    cuttings
  • 58
    Which of the following groups of crops requires a nursery?
    답변
    (C)
    cocoa, maize and rice
  • 59
    To which of the following crops does the term 'ginning' apply?
    답변
    (D)
    cotton
  • 60
    The scientific name for guinea grass is
    답변
    (A)
    panicum maximum
  • 61
    The national tree-planting campaign is aimed at stimulating
    답변
    (B)
    afforestation
  • 62
    The most common grazing system in West Africa is
    답변
    (B)
    rotational grazing
  • 63
    Smut disease of cereals is caused by a
    답변
    (B)
    fungus
  • 64
    Improvement of yam through breeding is difficult because
    답변
    (A)
    it possesses no sexual reproductive system
  • 65
    Leguminous cover crops do not
    답변
    (D)
    reduce the soil microbial population
  • 66
    Maize is a very important crop because apart from serving as a staple, it
    답변
    (C)
    forms the base of most livestock feeds
  • 67
    Andropogon gayanus is commonly called
    답변
    (C)
    gamba grass
  • 68
    Pasture crops are best used in preparing hay
    답변
    (C)
    just after seed maturation
  • 69
    Which of the following is not a characteristic of a good pasture?
    답변
    (A)
    high quality grass
  • 70
    Plant breeders aim at obtaining the following except
    답변
    (C)
    adaptation of pollination
  • 71
    The most active agent of physical weathering in arid regions is
    답변
    (C)
    temperature
  • 72
    Birds temporarily store their food in the
    답변
    (A)
    crop
  • 73
    Animal which chew the cud are
    답변
    (C)
    ruminants
  • 74
    Spermatozoa are produced in the
    답변
    (B)
    testicles
  • 75
    Which of the following is not a sign of heat in farm animals?
    답변
    (C)
    udder enlargement