Question 21:

• JAMB 2019

A crop not requiring more than 750mm annual rainfall is most suitable for cultivation in

A. Rain forest
B. Sahel savanna
C. Sudan savanna
D. Guinea savanna

Question 22:

• JAMB 2019

The process whereby rocks are broken down into small particles through both physical and chemical factors is known as

A. Rock degradation
B. Weathering
C. Erosion
D. Oxidation

Question 23:

• JAMB 2019

The parent material of a soil is formed from the disintegration of

A. Sand
B. Silt
C. Gravel
D. Rock

Question 24:

• JAMB 2019

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

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

Question 25:

• JAMB 2019

Which one of these is not an advantage of Newspaper as agricultural extension teaching methods?

A. It is restricted to only few literate farmer
B. The pictures they often carry serves as useful teaching aids
C. They are less expensive
D. They can also be used in areas where there is no electricity