WAEC - Agricultural Science (2005)

• 1

  Inadequate food production in most developing countries is due to

  回答

  (B)

  inadequate technology
• 2

  Which of the following groups of basic amenities should be provided in rural areas foe improves agricultural productivity?

  回答

  (A)

  water,electricity and helth care centres
• 3

  Government laws and reforms are aimed at

  回答

  (A)

  increasing agricultural production
• 4

  In order to ensure that crop and animal diseases are not transferred across international boundaries, government must

  回答

  (C)

  have and enforce quarantine services
• 5

  The role of science and technology in the development of agriculture includes the following except

  回答

  (D)

  setting up produce marketing boards
• 6

  The total land area of a country available for farming depends on the

  回答

  (B)

  climate of the area
• 7

  The scarcity of land often compels peasant farmers to practice

  回答

  (C)

  taungya system
• 8

  In West Africa, a greater part of the land is used for

  回答

  (C)

  building houses
• 9

  A piece of land can be considered more suitable for livestock production than for crop production when it is

  回答

  (D)

  infested with weeds
• 10

  The first vegetation zone which runs across the coast of most West African countries is the

  回答

  (B)

  mangrove forest
• 11

  The most active agent of physical weathering in arid regions is

  回答

  (C)

  temperature
• 12

  Soils in forest areas would normally have

  回答

  (C)

  high proportion of humus
• 13

  Clay particles hold cations because they

  回答

  (A)

  are negatively charged
• 14

  Under which of the following conditions will organic matter in the soil decompose fastest?

  回答

  (C)

  anaerobic conditions
• 15

  Which of the following materials can be applied to the soil in order to correct yellowing of leaves?

  回答

  (B)

  urea
• 16

  One importance of cover crops is that they

  回答

  (D)

  suppress weed growth
• 17

  The appropriate irrigation method for upland rice field is

  回答

  (A)

  sprinkler
• 18

  Drainage refers to

  回答

  (A)

  removal of excess water from the soil
• 19

  Energy in fossil materials may be harnessed as

  回答

  (D)

  fuel energy
• 20

  A decorticator is useful in the processing of

  回答

  (A)

  maize
• 21

  Which of the following types of survey reveals the physical features of farmlands?

  回答

  (B)

  topographical survey
• 22

  Calculate the area of a rectangular vegetable garden measuring 100m by 26m in hectares.

  回答

  (A)

  0.250
• 23

  Farm mechanization does not

  回答

  (D)

  involve the use of only heavy machinery
• 24

  A prolonged wet season at the early stage of growth in cotton will lead to

  回答

  (B)

  tall plant with few bolls
• 25

  The by-product in plant photosynthesis is

  回答

  (D)

  oxygen
• 26

  Which of the following reasons explain why fertilizers are added to soils?

  回答

  (D)

  increasing the nutrient level
• 27

  A crop which is usually propagated sexually is

  回答

  (C)

  cowpea
• 28

  Transplanting is best carried out in the evening because

  回答

  (C)

  moisture losses are low during cold waether
• 29

  Some cassava tubers are poisonous to non-ruminant because they contain

  回答

  (B)

  hydrocyanic acid
• 30

  Which of the following factors does not affect the distribution of pasture grasses?

  回答

  (D)

  pests
• 31

  Selective exploitation means felling trees of

  回答

  (B)

  specific ages and girths
• 32

  Streak disease of crop commonly attacks

  回答

  (C)

  maize
• 33

  Most viral diseases of plants are transmitted by

  回答

  (C)

  insects
• 34

  Viral diseases of crop plants are best controlled by

  回答

  (A)

  planting resistant varieties
• 35

  The following problems are likely to be caused by insects except

  回答

  (B)

  rottening of cobs in storage
• 36

  Weed plants which grow on other plants without deriving nutrients from them are called

  回答

  (B)

  epiphytes
• 37

  When a farmland is heavily infested with striga, it may be concluded that the farmland

  回答

  (C)

  may have been used for growing guinea corn
• 38

  Mulching

  回答

  (A)

  reduces evaporation of soil water
• 39

  An accessory sex gland in a bull is

  回答

  (A)

  prostate gland
• 40

  The most important reason for low livestock population in the rain forest zone is the

  回答

  (C)

  growth and proliferation of pathogens
• 41

  Which of the following feedstuffs does not contain phosphorous?

  回答

  (B)

  limestone
• 42

  When an animal eats wood and licks iron railing instead of the diet given to it, it is likely that the

  回答

  (C)

  diet is deficient in essential elements
• 43

  An indication that chicks are comfortable in a brooder is that they

  回答

  (C)

  spread themselves uniformly under the hover
• 44

  Mastitis is a disease which affects the

  回答

  (B)

  udder
• 45

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

  回答

  (B)

  bright eyes
• 46

  A protozoon organism causes

  回答

  (A)

  coccidiosis
• 47

  An animal infected by trypanosomiasis usually develops

  回答

  (C)

  anaemia and swollen lymph gland
• 48

  The purpose of vaccination is to

  回答

  (B)

  prevent disease infection
• 49

  Which of the following livestock endoparasites is a hermaphrodite?

  回答

  (C)

  tapeworm
• 50

  The most effective method of controlling ectoparasites in farm animals is by regular

  回答

  (B)

  dipping of animals in a solution of pesticides
• 51

  A common means of aerating a fish pond is by stirring the water and

  回答

  (A)

  removing dead and decaying matter
• 52

  Heterosis in animal breeding is referred to as

  回答

  (A)

  hybrid vigour
• 53

  In areas where labour is scarce and land is abundant, farmers tend to

  回答

  (B)

  practice mechanized farming
• 54

  The supply of farm produce to markets in West Africa is mostly dictated by

  回答

  (D)

  the consumers
• 55

  Farm insurance schemes do not cover losses due to

  回答

  (B)

  heavy pest infestation