WAEC - Agricultural Science (2021)

  • 1
    The branch of crop science which deals with the study of insect pests is 
    Antwoord
    (C)
    entomology
  • 2
    Horse racing and polo are events where horses are used for
    Antwoord
    (B)
    recreation
  • 3
    The construction of rural feeder roads solves the following access problems in agriculture except
    Antwoord
    (D)
    land tenure system
  • 4

    The diagram above illustrates a farm tool. Use it to answer this question.
     

    The illustrated farm tool is used for

    Antwoord
    (A)
    making mounds
  • 5

    The diagram above illustrates a farm tool. Use it to answer this question.

    The farm implement that could perform a similar function as the illustrated tool is

    Antwoord
    (C)
    ridger
  • 6
    A tractor-mounted sprayer used on large scale farms is the
    Antwoord
    (B)
    motorised sprayer
  • 7
    Which of the following types of farm power does not cause pollution?
    Antwoord
    (A)
    hydro
  • 8
    In planning a farmstead, the structure which should be located on high elevation is the 
    Antwoord
    (C)
    farmhouse
  • 9

    The diagram below illustrates processes in the water cycle. Use it to answer this question.

    The process labelled I is.

    Antwoord
    (D)
    transpiration
  • 10

    The diagram below illustrates processes in the water cycle. Use it to answer this question.

    The process labelled II is

    Antwoord
    (C)
    evaporation
  • 11

    The major source of water to the plants in the diagram is 

    Antwoord
    (C)
    capillary water
  • 12
    The new rock formed when limestone is subjected to great heat and pressure is
    Antwoord
    (D)
    gneiss
  • 13
    Which of the following pairs of raw materials is used in the canning industry
    Antwoord
    (A)
    meat and fish
  • 14
    Microorganisms that decompose organic matter will function best under 
    Antwoord
    (D)
    optimum soil PH
  • 15

    In an experiment determine the percentage of organic matter in a soil sample, the following data was collected; weight of over-dried soil before burning = 50g
    weight of over-dried soil after burning = 28g. Use the information to answer this question.

    Calculate the weight of organic matter in the soil

    Antwoord
    (B)
    22g
  • 16

    In an experiment determine the percentage of organic matter in a soil sample, the following data was collected; weight of over-dried soil before burning = 50g
    weight of over-dried soil after burning = 28g. Use the information to answer this question.

    Determine the percentage of organic matter in the soil 

    Antwoord
    (B)
    44%
  • 17
    Which of the following practices will improve clay soil?
    Antwoord
    (D)
    addition of organic material
  • 18
    A farmer practices crop rotation in order to
    Antwoord
    (D)
    improve soil fertility
  • 19
    The phosphorus cycle is described as being sedimentary because phosphorus 
    Antwoord
    (A)
    is a macroelement
  • 20
    The following factors are essential for maize production except 
    Antwoord
    (A)
    high temperature
  • 21
    Drying of newly harvested grains before storage helps to increase the 
    Antwoord
    (C)
    seed viability
  • 22
    Yam stored in a barn should be inspected at least once a week in order to
    Antwoord
    (D)
    remove sprouts and rotten tubers
  • 23
    The botanical name of onion is
    Antwoord
    (D)
    Allium cepa
  • 24
    Okro seeds are sown on 0.72 hectares of farmland at a spacing of 60cm. Calculate the expected plant population 
    Antwoord
    (D)
    20,000 plants
  • 25
    A plot of land devoted to the cultivation of fruit  trees is called
    Antwoord
    (A)
    orchard
  • 26
    Two species of kola grown for commercial purposes in West Africa are
    Antwoord
    (B)
    Cola nitida and cola verticillata
  • 27
    Propagation of ginger is generally done using it's
    Antwoord
    (B)
    rhizome
  • 28
    Elaeis guineensis and Arachis hypogaea are examples of
    Antwoord
    (B)
    oil crops
  • 29

    The diagram below illustrates a farm operation. Study it and answer this question.

    Which of the following statements is not a reason for carrying out the illustrated farm operation? To

    Antwoord
    (D)
    prevent lodging of the plants
  • 30

    The diagram below illustrates a farm operation. Study it and answer this question.

    Crops which require the illustrated farm operation are

    Antwoord
    (D)
    tomato and yam
  • 31
    The basic importance of agriculture to a forester is to 
    Antwoord
    (D)
    procure timber
  • 32
    A suitable grass for lawns is 
    Antwoord
    (D)
    Panicum maximum
  • 33
    The causative organism of maize rust is a 
    Antwoord
    (D)
    fungus
  • 34
    Which of the following groups of insect pests damages crops by bitting and chewing?
    Antwoord
    (C)
    armyworm, termite nd grasshopper
  • 35
    The breeds of cattle resistant to trypanosomiasis are
    Antwoord
    (A)
    N'dama and moturu
  • 36
    Which of the following features is not a characteristic of a good layer
    Antwoord
    (A)
    Bright red comb and wattle
  • 37
    The best way for a young animal to obtain colostrum is by
    Antwoord
    (D)
    allowing it to suckle the dam
  • 38
    Which of the following statement about slatted floors in livestock housing are true? They
    I.lessen labour requirements
    II.reduce odour in pens
    III.hamper movement of animals
    Antwoord
    (C)
    II and III only
  • 39
    If 0.7kg of feed was fed to chicks per week, determine the cost of feeding the birds for 6 weeks. (1kg of feed costs #5)
    Antwoord
    (C)
    #21.00
  • 40
    Feeds that have more than 18% fibre are classified as 
    Antwoord
    (D)
    roughages
  • 41
    An advantage of zero-grazing is that it
    Antwoord
    (C)
    prevents depletion of pasture
  • 42

    The diagram above illustrates a tool used in animal production. use it to answer this question.

    The illustrated tool is

    Antwoord
    (D)
    an artificial vagina
  • 43
    Formation of blisters on the mouth and the skin around the hoof of farm animals is a symptom of 
    Antwoord
    (D)
    foot and mouth disease
  • 44
    In sheep production, tapeworm could be controlled by 
    Antwoord
    (C)
    dipping
  • 45

    The table below illustrates the supply schedule of maize. Use it to answer this question.

        PRICE(#)   QUANTITY SUPPLIED(kg)
      24  480
      16  400

    The percentage change in quantity supplied for maize is

     

    Antwoord
    (A)
    16.7%