Waec Agricultural Science 2004 Past Questions and Answers

Question 6:

• WAEC 2004

Igneous rocks formed within the crust are called

A. Guartzite
B. Volcanic
C. Plutonic
D. Stratified

Question 7:

• WAEC 2004

Clay particles are able to attract cations in the soil because they

A. Are positively charged
B. Have excess negative charges
C. Are sticky
D. Can be moulded

Question 8:

• WAEC 2004

What is the percentage porosity of a soil sample whose volume is 250cm when the volume of air is 200cm?

A. 20
B. 25
C. 50
D. 80

Question 9:

• WAEC 2004

The most important soil micro-organism causing decay and nutrient recycling are

A. Bacteria and fungi
B. Fungi and algae
C. Algae and actinomycetes
D. Bacteria and algae

Question 10:

• WAEC 2004

Which of the following soil water is tightly held to the surface of soil particles?

A. Hygroscopic water
B. Gravitational water
C. Capillary water
D. Superfluous water