Question 396:

• 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 397:

• 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 398:

• 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 399:

• 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 400:

• 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