Waec Agricultural Science 1993 Past Questions and Answers

Question 26:

• WAEC 1993

Cassava mosaic virus can be controlled by

A. Spraying of fungicides
B. Inoculation of the plant
C. Spraying with insecticides
D. Treatment of stem cuttings
E. Growing resistant varieties

Question 27:

• WAEC 1993

Which of the following crops does not require nursery preparation?

A. Rice
B. Tobacco
C. Tomato
D. Okra
E. Pepper

Question 28:

• WAEC 1993

To which of the following crops does the term ginning apply?

A. Oil palm
B. Cocoa
C. Groundnut
D. Cotton
E. Coconut

Question 29:

• WAEC 1993

The symptoms of coffee leaf rust are

A. Leaf spots, loss of vigour and death of the leaves
B. Wilting and death of plant
C. Damping off and etiolation
D. Leaf spots and damping off
E. Etiolation and death of plant

Question 30:

• WAEC 1993

Breeding in self-pollination crops can be regarded as

A. Line breeding
B. Cross-breeding
C. Inbreeding
D. Hybridization
E. Back-crossing