WAEC - Agricultural Science (2013)

  • 1
    To facilitate mechanical harvesting of cereals, it is better to
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    (C)
    ensure they all have uniform height
  • 2
    One of the problems facing agricultural development in West Africa is
    Răspuns
    (A)
    inadequate financing
  • 3
    What action of government may be considered as granting of subsidies to farmers?
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    (C)
    Supplying agrochemicals at reduced cost
  • 4
    Which of the following are advantages of the communal land ownership system? l. Every member of the community has a piece of land on which of farm.ll. Co-operative farming is possible under this system. III . Large scale farming is encouraged . IV Land can be used as a security for loans.
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    (A)
    l and ll only
  • 5
    A socio-economic factor which affects the availability of land for agricultural use in West Africa is
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    (B)
    population growth
  • 6
    Which of the following factors affects the onset of flowering in crops?
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    (A)
    Atmospheric pressure
  • 7
    Marble is a metamorphic rock formed from
    Răspuns
    (A)
    limestone
  • 8
    Which of the following statements best describes sediment rocks?
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    (A)
    pre-existing rocks in which the original mineral has undergone change
  • 9
    The rock weathering process involving the equation; CaCO3 + H2CO3 → Ca(HCO3)2 is called
    Răspuns
    (C)
    hydrolysis
  • 10
    When compost is added to said, it
    Răspuns
    (C)
    increases water-holding capacity of the soil
  • 11
    Soils can become acidic as a result of the continuous application of
    Răspuns
    (A)
    single superphosphate
  • 12
    Which of the following species of bacteria lives symbiotically in root nodules of legumes?
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    (D)
    Rhizobium
  • 13
    Plant nutrients are restored during the fallow period through
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    (B)
    accumulation of soil organic matter
  • 14
    The processes by which animals release carbon dioxide into the air are
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    (A)
    respiration and decay
  • 15
    Which of the following practices leads to land degradation in the savanna zones of West Africa? l. Constant annual bushfire ll. Overgrazing of grassland lll. Application of cattle manure. IV. Cutting of woody species for fuel wood
    Răspuns
    (B)
    l, ll and lV only
  • 16
    a 100kg NPK 15: 15: 15 compound fertilizer has a filler make -up weight of
    Răspuns
    (D)
    55kg
  • 17
    One of the main disadvantages of mechanical tillage is the
    Răspuns
    (C)
    use of heavy equipment leading to soil compaction
  • 18
    Which of the following factors affect the work rate of draught animals? l. Feed intake ll. Breed of animal III. Harness for hitching. IV. Height of animal
    Răspuns
    (D)
    l, ll, lll and IV
  • 19
    Which of the following features could lead to wrong reading on a prismatic compass?
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    (D)
    MAGNETIC ATTRACTION
  • 20
    WHICH OF THE FOLLOWING STEPS GIVES A CORRECT SEQUENCE FOR SURVEYING A FARMSTEAD?
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    (C)
    preliminary survey → reconnaissance → mapping
  • 21
    The characteristic of draught animals which does not influence traction effort is
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    (D)
    meat quality
  • 22
    The branch of horticulture that deals with the production of vegetables is called
    Răspuns
    (B)
    olericulture
  • 23
    Pruning is carried out to 1. control the size of the plants ll. obtain clean and attractive fruits III. ensure correct spacing of trees
    Răspuns
    (B)
    l and lll only
  • 24
    Which of the following characteristics is not true of tree species used in alley cropping?
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    (B)
    Regenerate rapidly after pruning
  • 25
    Insect damage to crops takes the from of
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    (D)
    chewing , sucking and piercing
  • 26
    One disadvantage of vegetative propagation is that
    Răspuns
    (B)
    viral diseases are transferred to offspring
  • 27
    Which of the following factors should be considered when sowing seeds in the field? l. Time of sowing ll. Plant density III. Depth of sowing. lV. Method of sowing.
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    (D)
    l, ll, lll and IV
  • 28
    Which of the following groups require winnowing during processing?
    Răspuns
    (B)
    Cereals
  • 29
    A farmer who plants African Marigold between his crops has the intention of controlling
    Răspuns
    (C)
    fungi
  • 30
    If the spacing of a crop is 3.6m X 4. 5m, determine the crop population per hectare
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    (B)
    617
  • 31
    An example of a piercing and sucking insect-pest of crops is a
    Răspuns
    (A)
    mealy bug
  • 32
    Calculate the number of yam setts planted at a spacing of 1.0m by 1.0m on a hectare of land
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    (D)
    10,000 setts
  • 33
    If rows are spaced 1.0m apart with one plant per stand, determine the spacing between stands in order to obtain a plant population of 40,000/ha
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    (C)
    0.50m
  • 34
    Some plants are suitable for decorating living rooms because of their
    Răspuns
    (A)
    ability to endure low light intensity
  • 35
    Cappling and staking are important cultural practices in the cultivation of
    Răspuns
    (C)
    yams
  • 36
    An important function of mulching is that it
    Răspuns
    (C)
    conserves moisture in the soil
  • 37
    The removal of shealth on maize cob is referred to as
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    (A)
    winnowing
  • 38
    The removal of sheath on maize cob is referred to as
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    (C)
    dehusking
  • 39
    Which of the following sequences describes the steps in making hay?
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    (A)
    Cut, dry and bale
  • 40
    One disadvantage of using bamboo troughs water for poultry is that they
    Răspuns
    (B)
    are susceptible to algal growth
  • 41
    The characteristic odour in billy goats can be removed through
    Răspuns
    (D)
    dipping
  • 42
    A cattle breed in West Africa tolerant to trypanosomiasis is
    Răspuns
    (C)
    N' dama
  • 43
    A consequence of pasture littered with polythene materials is that
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    (B)
    the alimentary canal of farm animals could be blocked
  • 44
    Which of the following statements about colostrum is false? it is
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    (A)
    an evaporated milk
  • 45
    Meat obtained from cattle of less than one year old is called
    Răspuns
    (C)
    veal
  • 46
    Which of the following characteristics is not important in beef cattle production? l. Increased butter-far percentage ll. High feed conversion efficiency. III. High yield of lean meat
    Răspuns
    (A)
    l only
  • 47
    The following are systems of mating in farm animals: l. stud mating ll. artificial insemination. lll. pen mating IV herd mating
    Răspuns
    (C)
    l,ll,lll and IV
  • 48
    A disease of rabbit caused by a protozoan is
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    (D)
    milk fever
  • 49
    The common name of Axonopus compressus is
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    (A)
    carpet grass
  • 50
    Which of the following groups of cattle are tropical breeds?
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    (B)
    N' dama, Sokoto Gudali and Muturu
  • 51
    Heat in farm animals can be detected by the following signs except
    Răspuns
    (B)
    low blood temperature
  • 52
    The following substance are excretory products in farm animals except l. blood ll. sweet lll. urine
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    (A)
    l only
  • 53
    The following are signs of ill-health in farm animals except`
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    (D)
    increased appetite
  • 54
    Which of the following factors should be considered when building a rabbit hutch? l. safety and comfort of rabbits ll. ease of maintenance and cleaning lll day length
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    (A)
    l and ll only
  • 55
    Which of the following organs forms a barrier between an animal and its external environment?
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    (D)
    Skin