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 1:

  The effects of practicing crop rotation include the following except

  Options:
  A) maintaining and improving soil fertility
  B) controlling soil erosion
  C) adding humus to the soil
  D) preventing the build-up of pests and diseases
  Show Answer
  The correct answer is C .
• Question 2:

  What is the primary purpose of storage facilities in agriculture?

  Options:
  A) Offering a workspace for farm laborers
  B) Storing and preserving harvested crops
  C) Providing shelter for farm animals
  D) Housing agricultural machinery and equipment
  Show Answer
  The correct answer is B .
• Question 3:

  The following are examples of agricultural extension except

  Options:
  A) Agro-service centres
  B) Operation feed the nation
  C) Green revolution programme
  D) red revolution programme
  Show Answer
  The correct answer is D .
• Question 4:

  What are biotic factors in an agricultural ecosystem?

  Options:
  A) Factors related to the climate and weather
  B) Factors related to the living organisms
  C) Factors related to the physical environment
  D) Factors related to the availability of nutrients
  Show Answer
  The correct answer is B .
• Question 5: Yellow colouration of the lower leave of a growing maize plant may be due to deficiency in Options:
  A) potassium
  B) phosphorus
  C) zinc
  D) nitrogen
  Show Answer
  The correct answer is D .
• Question 6:

  What is the percentage water content of soil sample which weighed 180g when fresh and 120g when oven-dried?

  Options:
  A) 20.14%
  B) 25.00%
  C) 33.33%
  D) 60.00%
  Show Answer
  The correct answer is C .
• Question 7:

  Which of the following is a common problem in agricultural economics and extension?

  Options:
  A) Inadequate market infrastructure
  B) Excessive government regulations
  C) Overreliance on chemical inputs
  D) Lack of access to modern technology
  Show Answer
  The correct answer is D .
• Question 8: Which of the following insects transmits swollen shoot disease of cocoa? Options:
  A) stem borer
  B) mealybug
  C) whitefly
  D) scale insect
  Show Answer
  The correct answer is B .
• Question 9:

  Which of the following is a disadvantages of mass method

  Options:
  A) It is very expensive to operate
  B) It is not time consuming
  C) Larger audience can be reached
  D) Does not necessarily require the presence of an agent
  Show Answer
  The correct answer is A .
• Question 10:

  What is the primary purpose of processing facilities in agriculture?

  Options:
  A) To process raw agricultural materials into value-added products
  B) To provide shelter and housing for livestock
  C) To package and label agricultural products
  D) To store and preserve harvested crops
  Show Answer
  The correct answer is A .