Jamb Agricultural Science Past Questions For Year 2020
Question 21
Which of the following is not component of soil?
- A. air
- B. water
- C. organic matter
- D. texture
Question 22
The physical properties of soil include the following except
- A. PH
- B. colour
- C. moisture content
- D. porosity
Question 23
One of the limitation of mechanization of farms is
- A. reduction in the cost of production
- B. exposure of soil to the effects of climate
- C. increase in yield of crops
- D. reduction of farm labour
Question 24
The most common soil mineral found in all crystalline rocks and a main constituent of granite and sandstone is
- A. biotite
- B. quartz
- C. mica
- D. granite
Question 25
The damage to the stem of maize plants resulting in hollowness and lodging is most likely caused by
- A. rodents
- B. grasscutters
- C. stem borers
- D. weevils
