Agricultural-Science Exam Past Questions and Answers | JAMB, WAEC and NECO

Agricultural science studies farming practices, including soil cultivation for growing crops and raising animals for food, wool, and other products.

• Question 71:

  What are the main components of soil?

  Options:
  A) Water, nutrients, and microorganisms
  B) Organic matter, minerals, and air
  C) Sand, silt, and clay
  D) All of the above
  Show Answer
  The correct answer is D .
• Question 72:

  A condition in which a gene does not manifest observable characteristics in the presence of its dominant allele is known as

  Options:
  A) dominance
  B) mutation
  C) recessiveness
  D) homozygosity
  Show Answer
  The correct answer is C .
• Question 73: A farming practice that encourages the depletion of soil fertility is Options:
  A) planting of cover crops
  B) crop rotation
  C) manual weeding
  D) continuous cropping
  Show Answer
  The correct answer is D .
• Question 74:

  Heavy infestation of liver fluke causes poor absorption of fats in livestock by

  Options:
  A) blocking bile ducts thus preventing flow of bile
  B) destroying fat-digesting enzymes
  C) reducing ingestion of fats
  D) inhibiting the action of digestive enzymes
  Show Answer
  The correct answer is D .
• Question 75:

  Which of the following groups of crops requires a nursery?

  Options:
  A) cotton,sorghum and tomato
  B) oil palm, cocoa and tomato
  C) cocoa, maize and rice
  D) banana, coffee and tomato
  Show Answer
  The correct answer is C .
• Question 76:

  If a crop requires 1.5kg phosphorus per hectare, how many kg of manure will be required per hectare if 1kg manure contains 0.32kg of phosphorus

  Options:
  A) 2.47kg
  B) 4.69kg
  C) 7.35kg
  D) 12.3kg
  Show Answer
  The correct answer is B .
• Question 77:

  Root-knot disease of tomato is caused by

  Options:
  A) virus
  B) nematode
  C) bacterium
  D) fungus
  Show Answer
  The correct answer is B .
• Question 78:

  Forages that are chopped green and fed directly to livestock are referred to as

  Options:
  A) hay
  B) silage
  C) fodder
  D) soilage.
  Show Answer
  The correct answer is D .
• Question 79:

  A biotic factor influencing agricultural production is

  Options:
  A) rainfall
  B) predator
  C) soil structure
  D) wind
  Show Answer
  The correct answer is B .
• Question 80:

  The problems associated with land tenure through inheritance include the following except

  Options:
  A) small land holdings for family members
  B) hatred among family members arising from land sharing
  C) right of individuals to free use and control of inherited land
  D) difficulty to sell part of inherited land
  Show Answer
  The correct answer is C .