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Agricultural Science Past Questions

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11
Which of the following types of soil contains particles of diameter between 0.02 mm and 2.o mm?
  • A. sand
  • B. silt
  • C. gravel
  • D. clay
  • E. stone
View Answer & Discuss (2) WAEC 1988
12
A farmer cultivating leafy vegetables will require fertilizers with a relatively high content of
  • A. calcium
  • B. magnesium
  • C. potasssium
  • D. nitrogen
  • E. phosphorus
View Answer & Discuss (1) WAEC 1988
13
The earthworm is important to the farmer because it
  • A. improves soil structure
  • B. improves soil texture
  • C. destroys soil pathogens
  • D. adds nutrients to the soil
  • E. prevents soil erosion
View Answer & Discuss (3) WAEC 1988
14
The type of rocks formed from the molten magma is known as
  • A. sedimentary
  • B. igneous
  • C. metamorphic
  • D. schist
  • E. sandstone
View Answer & Discuss (1) WAEC 1988
15
The relationship between the microorganisms and plant in the nitrogen cycle is best described as
  • A. parasitism
  • B. commensalism
  • C. competition
  • D. symbiosis
  • E. saprophytism
View Answer & Discuss (3) WAEC 1988