Waec Agricultural Science 2002 Past Questions and Answers

Question 11:

• WAEC 2002

Capillarity is highest in

A. Silt
B. Loam
C. Sand
D. Clay

Question 12:

• WAEC 2002

Which of the following describes the effects of excessive nitrogen application on the growth of maize plants?

A. High vegetative growth with low yield
B. High vegetative growth with high yield
C. Low vegetative growth with high yield
D. Low vegetative growth with low yield

Question 13:

• WAEC 2002

Nitrogen is taken up by plant roots in the form of

A. Nitrate ion
B. Nitrite ion
C. Nitric acid
D. Nitrogen gas

Question 14:

• WAEC 2002

In the process of recycling carbon in nature, carbondioxide is used by crops during

A. Respiration
B. Decomposition
C. Photosynthesis
D. Transpiration

Question 15:

• WAEC 2002

Which of the following is not an effect of water-logging on crop production? it

A. Inhibits plant development
B. Encourages leaching
C. Inhibits the activities of micro organisms in the soil
D. Causes plant roots to wilt