Waec Agricultural Science 2020 Past Questions and Answers

Question 41:

• WAEC 2020

Which of the following crops is dicotyledonous?

A. Zea mays
B. Oryza sativa
C. Elaeis guineensis
D. Vigna unguiculata

Question 42:

• WAEC 2020

Water which rises above the water table in the soil and is held in fine medium pores between soil particles by surface tension is?

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

Question 43:

• WAEC 2020

An oven dried soil sample of mass 8g had a mass of 1.6g after it was completely burnt. Determine the percentage of humus in the soil sample.

A. 6.4%
B. 9.6%
C. 20%
D. 80%

Question 44:

• WAEC 2020

The deficiency of nitrogen in a maize plant can be corrected by applying?

A. Potassium chloride
B. Muriate of potash
C. Sulphate of ammonia
D. Calcium carbonate

Question 45:

• WAEC 2020

The structure of sandy soils can be described as?

A. Platy
B. Crumby
C. Single-grained
D. Bloc