WAEC - Agricultural Science (2013)

• 1

  To facilitate mechanical harvesting of cereals, it is better to

  回答

  (C)

  ensure they all have uniform height
• 2

  One of the problems facing agricultural development in West Africa is

  回答

  (A)

  inadequate financing
• 3

  What action of government may be considered as granting of subsidies to farmers?

  回答

  (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.

  回答

  (A)

  l and ll only
• 5

  A socio-economic factor which affects the availability of land for agricultural use in West Africa is

  回答

  (B)

  population growth
• 6

  Which of the following factors affects the onset of flowering in crops?

  回答

  (A)

  Atmospheric pressure
• 7

  Marble is a metamorphic rock formed from

  回答

  (A)

  limestone
• 8

  Which of the following statements best describes sediment rocks?

  回答

  (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

  回答

  (C)

  hydrolysis
• 10

  When compost is added to said, it

  回答

  (C)

  increases water-holding capacity of the soil
• 11

  Soils can become acidic as a result of the continuous application of

  回答

  (A)

  single superphosphate
• 12

  Which of the following species of bacteria lives symbiotically in root nodules of legumes?

  回答

  (D)

  Rhizobium
• 13

  Plant nutrients are restored during the fallow period through

  回答

  (B)

  accumulation of soil organic matter
• 14

  The processes by which animals release carbon dioxide into the air are

  回答

  (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

  回答

  (B)

  l, ll and lV only
• 16

  a 100kg NPK 15: 15: 15 compound fertilizer has a filler make -up weight of

  回答

  (D)

  55kg
• 17

  One of the main disadvantages of mechanical tillage is the

  回答

  (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

  回答

  (D)

  l, ll, lll and IV
• 19

  Which of the following features could lead to wrong reading on a prismatic compass?

  回答

  (D)

  MAGNETIC ATTRACTION
• 20

  WHICH OF THE FOLLOWING STEPS GIVES A CORRECT SEQUENCE FOR SURVEYING A FARMSTEAD?

  回答

  (C)

  preliminary survey → reconnaissance → mapping
• 21

  The characteristic of draught animals which does not influence traction effort is

  回答

  (D)

  meat quality
• 22

  The branch of horticulture that deals with the production of vegetables is called

  回答

  (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

  回答

  (B)

  l and lll only
• 24

  Which of the following characteristics is not true of tree species used in alley cropping?

  回答

  (B)

  Regenerate rapidly after pruning
• 25

  Insect damage to crops takes the from of

  回答

  (D)

  chewing , sucking and piercing
• 26

  One disadvantage of vegetative propagation is that

  回答

  (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.

  回答

  (D)

  l, ll, lll and IV
• 28

  Which of the following groups require winnowing during processing?

  回答

  (B)

  Cereals
• 29

  A farmer who plants African Marigold between his crops has the intention of controlling

  回答

  (C)

  fungi
• 30

  If the spacing of a crop is 3.6m X 4. 5m, determine the crop population per hectare

  回答

  (B)

  617
• 31

  An example of a piercing and sucking insect-pest of crops is a

  回答

  (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

  回答

  (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

  回答

  (C)

  0.50m
• 34

  Some plants are suitable for decorating living rooms because of their

  回答

  (A)

  ability to endure low light intensity
• 35

  Cappling and staking are important cultural practices in the cultivation of

  回答

  (C)

  yams
• 36

  An important function of mulching is that it

  回答

  (C)

  conserves moisture in the soil
• 37

  The removal of shealth on maize cob is referred to as

  回答

  (A)

  winnowing
• 38

  The removal of sheath on maize cob is referred to as

  回答

  (C)

  dehusking
• 39

  Which of the following sequences describes the steps in making hay?

  回答

  (A)

  Cut, dry and bale
• 40

  One disadvantage of using bamboo troughs water for poultry is that they

  回答

  (B)

  are susceptible to algal growth
• 41

  The characteristic odour in billy goats can be removed through

  回答

  (D)

  dipping
• 42

  A cattle breed in West Africa tolerant to trypanosomiasis is

  回答

  (C)

  N' dama
• 43

  A consequence of pasture littered with polythene materials is that

  回答

  (B)

  the alimentary canal of farm animals could be blocked
• 44

  Which of the following statements about colostrum is false? it is

  回答

  (A)

  an evaporated milk
• 45

  Meat obtained from cattle of less than one year old is called

  回答

  (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

  回答

  (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

  回答

  (C)

  l,ll,lll and IV
• 48

  A disease of rabbit caused by a protozoan is

  回答

  (D)

  milk fever
• 49

  The common name of Axonopus compressus is

  回答

  (A)

  carpet grass
• 50

  Which of the following groups of cattle are tropical breeds?

  回答

  (B)

  N' dama, Sokoto Gudali and Muturu
• 51

  Heat in farm animals can be detected by the following signs except

  回答

  (B)

  low blood temperature
• 52

  The following substance are excretory products in farm animals except l. blood ll. sweet lll. urine

  回答

  (A)

  l only
• 53

  The following are signs of ill-health in farm animals except`

  回答

  (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

  回答

  (A)

  l and ll only
• 55

  Which of the following organs forms a barrier between an animal and its external environment?

  回答

  (D)

  Skin