Waec Agricultural Science 1995 Past Questions and Answers

Question 6:

• WAEC 1995

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
E. Basalt

Question 7:

• WAEC 1995

The factors affecting formation of soil include the following except

A. Organisms
B. Time
C. Topography
D. Catena
E. Climate

Question 8:

• WAEC 1995

Inhibition of root and bark development, fruiting and seed formation in crops is due to the deficiency of

A. Phosphorus
B. Boron
C. Nitrogen
D. Chlorine
E. Molybdenum

Question 9:

• WAEC 1995

Which of the following is not an effect of grazing on the soil?

A. Enrichment of soil with animal dung
B. Exposure of soil to erosion
C. Destruction of soil structure
D. Increase in soil acidity
E. Reduced rate of water percolation

Question 10:

• WAEC 1995

In underground drainage

A. Ditches are constructed to remove excess water
B. Furrows in which water collects are made
C. Water seeps into the tiles to reach an outlet where water is disposed
D. Water is pumped through perforated pipes to crops
E. Ditches are dug from a source of water to the farmland