Waec Agricultural Science 1997 Past Questions and Answers

Question 11:

• WAEC 1997

Which of the following is a soil micro-nutrient?

A. Magnesium
B. Potassium
C. Calsium
D. Iron
E. Phosphorus

Question 12:

• WAEC 1997

Crops grown in nitrogen deficient soil show the following characteristics except

A. Poor setting of fruit
B. Stunted growth
C. Chlorosis in growing crops
D. Yellowing of lower leaves
E. Timely ripening of fruits

Question 13:

• WAEC 1997

Which of the following is not a function of organic matter in the soil?

A. Conserving soil water
B. Preventing soil erosion
C. Preventing leaching in soil
D. Inhibiting seed germination
E. Stabilising the structure of the soil

Question 14:

• WAEC 1997

The following crops can be grown as cover crops except

A. Pueraria phaseoloides
B. Stylozanthes gracillis
C. Centrosema pubescens
D. Nicotiana tabacum
E. Calopogonium mucunoides

Question 15:

• WAEC 1997

Effects of overgrazing on soil include the following except

A. Exposure of soil to erosion
B. Depletion of soil nutrients
C. Soil compaction
D. Improvement of soil structure
E. Exposure of soil to direct rays of the sun