Waec Agricultural Science 2007 Past Questions and Answers

Question 36:

• WAEC 2007

The side effects of the various preventive and control measures of pests and diseases of crops include the following except

A. Improved quality of farm produce
B. Environmental pollution
C. Poisoning of wildlife
D. Disruption of the ecosystem

Question 37:

• WAEC 2007

Biological methods of weed control do not include

A. Introducing insects to control weeds
B. Planting crops to compete with the weeds
C. Planting leguminous cover crops
D. Uprooting the weeds

Question 38:

• WAEC 2007

Assuming that in sheep, the allele for black coat colour is dominant over that for brown coat colour. What percentage of the F generation will have black colour when two heterozygotes are crossed?

A. 100%
B. 75%
C. 50%
D. 25%

Question 39:

• WAEC 2007

Assuming that in sheep, the allele for black coat colour is dominant over that for brown coat colour. Crossing a heterzygote black with a homozygote brown will produce

A. 100% brown coat coloured offspring
B. 75% brown coat coloured offspring
C. 50% brown coat coloured offspring
D. 25% brown coat coloured offspring

Question 40:

• WAEC 2007

Which of the following structures is not connected to the urethra of a bull?

A. Bladder
B. Epididymis
C. Testis
D. Rectum