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 471:

  If 100 pieces of pests is attacking an hectare of cocoa farm and 25% suddenly died while 40% of the remnant is sent for medical examination. What is the number of pest remaining?

  Options:
  A) 45
  B) 50
  C) 25
  D) 75
  Show Answer
  The correct answer is A .
• Question 472:

  Andropogon gayanus is commonly called

  Options:
  A) guinea grass
  B) elephant grass
  C) gamba grass
  D) spear grass
  Show Answer
  The correct answer is C .
• Question 473:

  Artificial scarcity of agricultural produce is often caused by the following marketing agents except

  Options:
  A) farmers
  B) wholesalers
  C) middlemen
  D) co-operatives
  Show Answer
  The correct answer is A .
• Question 474: The following crops will enrich the soil with nitrates except Options:
  A) calopogonium
  B) pueraria
  C) centrosema
  D) exoriepus
  Show Answer
  The correct answer is D .
• Question 475:

  Primary tillage is also known as

  Options:
  A) Ploughing
  B) Harrowing
  C) Stumping
  D) Ridging
  Show Answer
  The correct answer is A .
• Question 476:

  

  The diagram above shows parts of a plough.

  Study it and answer this question.

  The part labelled I in the diagram is the

  Options:
  A) hitch
  B) handle
  C) plough share
  D) mould board
  Show Answer
  The correct answer is D .
• Question 477:

  The Mendelian law of segregation states that the characteristics which is hidden in an F1, reappears in F2 generation in a ratio

  Options:
  A) 1 : 2
  B) 2 : 2
  C) 1 : 3
  D) 3 : 2
  Show Answer
  The correct answer is C .
• Question 478:

  The following are the advantages of the sprinkler method of irrigation except

  Options:
  A) The system can be made automatic
  B) They are portable making them suitable for use
  C) Rate of application of irrigation water can be controlled
  D) The method may be difficult for local farmers to use
  Show Answer
  The correct answer is D .
• Question 479:

  Which of the following agricultural extensions aims at reaching a large number of farmers at the same time?

  Options:
  A) mass method
  B) group method
  C) individual method
  D) contact method
  Show Answer
  The correct answer is A .
• Question 480:

  What is rock weathering and how does it affect agriculture?

  Options:
  A) Rock weathering is the process of rocks eroding and washing away from agricultural fields
  B) Rock weathering is the process of breaking down rocks into smaller fragments
  C) Rock weathering is the process of rocks decomposing and releasing nutrients into the soil
  D) Rock weathering is the process of rocks absorbing water and expanding in size
  Show Answer
  The correct answer is B .