WAEC - Agricultural Science (2013)

  • 1
    To facilitate mechanical harvesting of cereals, it is better to
    উত্তর
    (C)
    ensure they all have uniform height
  • 2
    One of the problems facing agricultural development in West Africa is
    উত্তর
    (A)
    inadequate financing
  • 3
    What action of government may be considered as granting of subsidies to farmers?
    উত্তর
    (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.
    উত্তর
    (A)
    l and ll only
  • 5
    A socio-economic factor which affects the availability of land for agricultural use in West Africa is
    উত্তর
    (B)
    population growth
  • 6
    Which of the following factors affects the onset of flowering in crops?
    উত্তর
    (A)
    Atmospheric pressure
  • 7
    Marble is a metamorphic rock formed from
    উত্তর
    (A)
    limestone
  • 8
    Which of the following statements best describes sediment rocks?
    উত্তর
    (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
    উত্তর
    (C)
    hydrolysis
  • 10
    When compost is added to said, it
    উত্তর
    (C)
    increases water-holding capacity of the soil
  • 11
    Soils can become acidic as a result of the continuous application of
    উত্তর
    (A)
    single superphosphate
  • 12
    Which of the following species of bacteria lives symbiotically in root nodules of legumes?
    উত্তর
    (D)
    Rhizobium
  • 13
    Plant nutrients are restored during the fallow period through
    উত্তর
    (B)
    accumulation of soil organic matter
  • 14
    The processes by which animals release carbon dioxide into the air are
    উত্তর
    (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
    উত্তর
    (B)
    l, ll and lV only
  • 16
    a 100kg NPK 15: 15: 15 compound fertilizer has a filler make -up weight of
    উত্তর
    (D)
    55kg
  • 17
    One of the main disadvantages of mechanical tillage is the
    উত্তর
    (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
    উত্তর
    (D)
    l, ll, lll and IV
  • 19
    Which of the following features could lead to wrong reading on a prismatic compass?
    উত্তর
    (D)
    MAGNETIC ATTRACTION
  • 20
    WHICH OF THE FOLLOWING STEPS GIVES A CORRECT SEQUENCE FOR SURVEYING A FARMSTEAD?
    উত্তর
    (C)
    preliminary survey → reconnaissance → mapping
  • 21
    The characteristic of draught animals which does not influence traction effort is
    উত্তর
    (D)
    meat quality
  • 22
    The branch of horticulture that deals with the production of vegetables is called
    উত্তর
    (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
    উত্তর
    (B)
    l and lll only
  • 24
    Which of the following characteristics is not true of tree species used in alley cropping?
    উত্তর
    (B)
    Regenerate rapidly after pruning
  • 25
    Insect damage to crops takes the from of
    উত্তর
    (D)
    chewing , sucking and piercing
  • 26
    One disadvantage of vegetative propagation is that
    উত্তর
    (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.
    উত্তর
    (D)
    l, ll, lll and IV
  • 28
    Which of the following groups require winnowing during processing?
    উত্তর
    (B)
    Cereals
  • 29
    A farmer who plants African Marigold between his crops has the intention of controlling
    উত্তর
    (C)
    fungi
  • 30
    If the spacing of a crop is 3.6m X 4. 5m, determine the crop population per hectare
    উত্তর
    (B)
    617
  • 31
    An example of a piercing and sucking insect-pest of crops is a
    উত্তর
    (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
    উত্তর
    (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
    উত্তর
    (C)
    0.50m
  • 34
    Some plants are suitable for decorating living rooms because of their
    উত্তর
    (A)
    ability to endure low light intensity
  • 35
    Cappling and staking are important cultural practices in the cultivation of
    উত্তর
    (C)
    yams
  • 36
    An important function of mulching is that it
    উত্তর
    (C)
    conserves moisture in the soil
  • 37
    The removal of shealth on maize cob is referred to as
    উত্তর
    (A)
    winnowing
  • 38
    The removal of sheath on maize cob is referred to as
    উত্তর
    (C)
    dehusking
  • 39
    Which of the following sequences describes the steps in making hay?
    উত্তর
    (A)
    Cut, dry and bale
  • 40
    One disadvantage of using bamboo troughs water for poultry is that they
    উত্তর
    (B)
    are susceptible to algal growth
  • 41
    The characteristic odour in billy goats can be removed through
    উত্তর
    (D)
    dipping
  • 42
    A cattle breed in West Africa tolerant to trypanosomiasis is
    উত্তর
    (C)
    N' dama
  • 43
    A consequence of pasture littered with polythene materials is that
    উত্তর
    (B)
    the alimentary canal of farm animals could be blocked
  • 44
    Which of the following statements about colostrum is false? it is
    উত্তর
    (A)
    an evaporated milk
  • 45
    Meat obtained from cattle of less than one year old is called
    উত্তর
    (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
    উত্তর
    (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
    উত্তর
    (C)
    l,ll,lll and IV
  • 48
    A disease of rabbit caused by a protozoan is
    উত্তর
    (D)
    milk fever
  • 49
    The common name of Axonopus compressus is
    উত্তর
    (A)
    carpet grass
  • 50
    Which of the following groups of cattle are tropical breeds?
    উত্তর
    (B)
    N' dama, Sokoto Gudali and Muturu
  • 51
    Heat in farm animals can be detected by the following signs except
    উত্তর
    (B)
    low blood temperature
  • 52
    The following substance are excretory products in farm animals except l. blood ll. sweet lll. urine
    উত্তর
    (A)
    l only
  • 53
    The following are signs of ill-health in farm animals except`
    উত্তর
    (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
    উত্তর
    (A)
    l and ll only
  • 55
    Which of the following organs forms a barrier between an animal and its external environment?
    উত্তর
    (D)
    Skin