Waec Agricultural Science 1991 Past Questions and Answers

Question 6:

• WAEC 1991

The different types of soil are determined by the relative amounts of each of the following components except

A. Rocks
B. Air
C. Water
D. Minerals
E. Organic matter

Question 7:

• WAEC 1991

Fertilizers that usually contain one nutrient which can be used directly by plants are commonly called

A. Organic fertilizers
B. Mixed fertilizers
C. Inorganic fertilizers
D. Compound fertilizers
E. Straight fertilizers

Question 8:

• WAEC 1991

A soil with particles of less than 0.002mm in diameter is referred to as

A. Clay
B. Silt
C. Sand
D. Gravel
E. Humus

Question 9:

• WAEC 1991

Which of the following factors does not bring about soil formation?

A. Climate
B. Time
C. Parent material
D. Sunshine
E. Topography

Question 10:

• WAEC 1991

Plant micro-nutrients include the following except

A. Sulphur
B. Copper
C. Iron
D. Zinc
E. Chlorine