Waec Agricultural Science 1992 Past Questions and Answers

Question 6:

• WAEC 1992

Adequate knowledge of climate is useful in determining the following except

A. Method of land clearing to adopt
B. Tillage pratices
C. Crop and livestock management practices
D. Harvesting and storage
E. Marketing practices and stategies

Question 7:

• WAEC 1992

The most important soil microorganism which are effective decomposers of wood in forest areas are

A. Earthworm
B. Wood beetles
C. Termites
D. Algea
E. Fungi

Question 8:

• WAEC 1992

Which of the following is not a biotic factor affecting agricultural production?

A. Predator
B. Soil
C. Parasites
D. Pest
E. Dieases

Question 9:

• WAEC 1992

The effect of clearing agricultural lands clean of all vegetation and or trees include the following except

A. Exposure of soil to erosion
B. Compaction of soil
C. Desertification
D. Complete removal of soil nutrients
E. Exposure of subsoil

Question 10:

• WAEC 1992

Which of the following is not an advantage of drip-irrigation?

A. Fertilizers can be applied through the system
B. There is reduction in the concentration of salt in the root zone
C. The system operates on a much lower line pressure than spinkler system
D. Its efficiency on water distribution in steep slopes is poor
E. There is considerable maximization on use of water