Waec Agricultural Science 2007 Past Questions and Answers

Question 6:

• WAEC 2007

Water-logged soils impede good crop growth and development because

A. The fibrous roots are destroyed
B. Crop roots are deprived of sufficient oxygen
C. Excessive water stops root growth
D. Soil around roots become too cold for root growth

Question 7:

• WAEC 2007

The relative proportion of each fraction of soil in a soil sample determines its

A. Texture
B. Structure
C. Profile
D. Catena

Question 8:

• WAEC 2007

Which of the following materials cannot be used for liming?

A. Gypsum
B. Basic slag
C. Chalk
D. Urea

Question 9:

• WAEC 2007

Which of the following statements about soil water is true?

A. Crops wilt when gravitational water has drained off
B. Capillary water drains off after rainfall
C. A soil with high water table is best for farming
D. Crops utilize capillary water in the soil

Question 10:

• WAEC 2007

Which of the following soil elements becomes readily available at pH values above 8?

A. Molybdenum
B. Manganese
C. Zinc
D. Aluminium