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 31:

  The most efficient irrigation method on large scale farms involve the use of

  Options:
  A) overhead irrigation facilities
  B) flooding system
  C) underground porous pipes
  D) shadoof system
  Show Answer
  The correct answer is A .
• Question 32:

  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 33:

  A soil may be called as alkaline when the pH of the soil is more than

  Options:
  A) 6.5
  B) 5.5
  C) 7.0
  D) 5.0
  Show Answer
  The correct answer is C .
• Question 34:

  The mating of unrelated individual animals within the same breed is called

  Options:
  A) Out breeding
  B) In - breeding
  C) Line breeding
  D) Cross breeding
  Show Answer
  The correct answer is A .
• Question 35:

  The length of oestrus cycle (in days) in goat is

  Options:
  A) 16 - 17
  B) 18 - 21
  C) 19 - 20
  D) 20 - 22
  Show Answer
  The correct answer is B .
• Question 36: Crop rotation decreases the incidence of pests by Options:
  A) breaking life cycles of pests
  B) attracting pest predators
  C) sterilizing the soil
  D) maintaining soil fertility
  Show Answer
  The correct answer is A .
• Question 37:

  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 38:

  During the processes of soil formation, the cracks or crevices that are first noticed on the rocks are normally caused by

  Options:
  A) ice
  B) man
  C) wind
  D) temperature
  Show Answer
  The correct answer is D .
• Question 39:

  The damage to the stem of maize plants resulting in hollowness and lodging is most likely caused by

  Options:
  A) rodents
  B) grasscutters
  C) stem borers
  D) weevils
  Show Answer
  The correct answer is C .
• Question 40: If T represents the gene for tallness while t represents dwarfness. The genotypic ratio of the second filial generation will be Options:
  A) 3:1
  B) 1:2:1
  C) 2:2
  D) 4:0
  Show Answer
  The correct answer is B .