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:

  The alternate heating and cooling of rocks result in

  Options:
  A) sublimation
  B) volatilization
  C) solidification
  D) fragmentation
  Show Answer
  The correct answer is D .
• Question 72:

  In surveying, the instrument used to measure horizontal, vertical angles and planes is the

  Options:
  A) gunters chain
  B) prismatic compass
  C) ranging poles
  D) theodolite.
  Show Answer
  The correct answer is D .
• Question 73:

  

  During which of the following plant propagation methods is the tool represented used?

  Options:
  A) Seed planting
  B) Seedling transplant
  C) Budding
  D) Layering
  Show Answer
  The correct answer is C .
• Question 74:

  

  From the curve above, at what point is it advisable for the farmer to stop further addition of input?

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is C .
• Question 75:

  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 76:

  Which of the following is a type of land tenure system?

  Options:
  A) Freehold system
  B) Keyhold system
  C) International system
  D) Land tenure system by theft
  Show Answer
  The correct answer is A .
• Question 77: Cassava mosaic disease is transmitted by Options:
  A) Heteroligus meles
  B) Maruca testulalis
  C) Sesamia spp
  D) Bemisia nigerensis
  Show Answer
  The correct answer is D .
• Question 78:

  _________ is the sowing of seed by drilling with stick or knife, followed by dropping seeds and covering them

  Options:
  A) Broadcasting
  B) Dibbling
  C) Dribbling
  D) Drilling
  Show Answer
  The correct answer is D .
• Question 79: If T represents the gene for tallness while t represents dwarfness. When a tall (TT) crop is crossed with a dwarf (tt) crop, the resultant crop will be Options:
  A) 100% dwarf
  B) 100% tall
  C) 50% tall and 50% dwarf
  D) 75% tall and 25% dwarf
  Show Answer
  The correct answer is B .
• Question 80:

  The most effective method of controlling or preventing viral diseases in plants is by

  Options:
  A) practising crop rotation
  B) spraying crops regularly
  C) planting resistant varieties
  D) burning affected crops
  Show Answer
  The correct answer is C .