Waec Agricultural Science 2011 Past Questions and Answers

Question 11:

• WAEC 2011

Which of the following statements is correct about micro-nutrients? They

A. Promote formation of only root nodules
B. Are required by plants in very small quantities
C. Are fixed into the soil through microbial activity
D. Increase crop tolerance to pest attack

Question 12:

• WAEC 2011

Which of the following properties of soil determines its water-holding capacity? I. Texture II. pH III. Colour IV. Structure

A. I and II only
B. I and IV only
C. II and III only
D. III and IV only

Question 13:

• WAEC 2011

Which of the following statements about soil organisms is false?

A. Soil pH will attack population of soil organisms
B. Population of soil living organisms is increased with increase in soil organic matter
C. Soil with good texture and structure cannot harbour soil microbes
D. Soil temperature affects the activities of soil organisms

Question 14:

• WAEC 2011

A detrimental effect of bush burning is that it

A. Destroys soil organic matter
B. Destroys weed seeds
C. Sterilizes the soil
D. Adds potash to the soil

Question 15:

• WAEC 2011

The following crops will enrich the soil with nitrates except

A. Calopogonium
B. Pueraria
C. Centrosema
D. Exoriepus