Waec Agricultural Science 1991 Past Questions and Answers

Question 26:

• WAEC 1991

What symptom can be used to identify maize rust?

A. Yellow colouration of the leaves
B. Raised brown spots on the leaves
C. Infected leaves showing stripes of yellow and green
D. Drying up to the leaves
E. Shedding of leaves

Question 27:

• WAEC 1991

I.Pale leaves II. Shrunken new leaves III. Water-soaked bark which peels off IV. Gum-like exudation from the cracks on the bark. Which of the following diseases of citrus has the symptoms listed above?

A. Die-bark
B. Gum-mosis
C. Blight
D. Tristeza
E. Citrus scab

Question 28:

• WAEC 1991

Which of the following is not a breed of cattle?

A. Ndama
B. Sokoto gudali
C. White fulani
D. Sokoto red
E. Muturu

Question 29:

• WAEC 1991

Which of the following may cause disease in a fish pond?

A. Mixed stocking
B. Liming
C. Poor management practices
D. Harvesting
E. Fertilization

Question 30:

• WAEC 1991

Which of the following may cause disease in a fish pond?

A. Mixed stocking
B. Liming
C. Poor management practices
D. Harvesting
E. Fertilization