Waec Agricultural Science 1993 Past Questions and Answers

Question 31:

• WAEC 1993

An effective control method of the citrus moth is

A. Hand-picking of the moth
B. Spraying with fungicide
C. Use of predators
D. Delayed planting
E. Timely harvesting of ripe fruits

Question 32:

• WAEC 1993

Cassava and sugarcane are mainly propagated by

A. Seeding
B. Layering
C. Budding
D. Cutting
E. Grafting

Question 33:

• WAEC 1993

Control of weeds of forage crops can be carried out by the following methods except

A. Cutting
B. Burning
C. Use of herbicide
D. Biological control
E. Grazing

Question 34:

• WAEC 1993

The aim of a plant breeder in producing a crop variety which is tolerated to extreme of cold, drought, wind and heat is based on the

A. Adaptation of the variety to climate conditions
B. Enhancing the resistance of the variety to diseases
C. Meeting the needs of the consumers
D. Enhancing the resistance of the variety to pests
E. Meeting the needs of different farmers

Question 35:

• WAEC 1993

The crop which can be processed into powered form for effective preservation include the following except

A. Maize
B. Yam
C. Pepper
D. Soya bean
E. Kolanut