Waec Agricultural Science 2020 Past Questions and Answers

Question 36:

• WAEC 2020

A crop that can be propagated by stem cutting is?

A. Plaintain
B. Pepper
C. Cassava
D. Carrot

Question 37:

• WAEC 2020

Which of the following crops can conveniently replace maize in the table?

A. Cassava
B. Cashew
C. Mango
D. Millet

Question 38:

• WAEC 2020

The following bacteria are important in the nitrogen cycle except?

A. Bacillus
B. Nitrobacter
C. Nitrosomonas
D. Rhizobium

Question 39:

• WAEC 2020

Determine the ratio of nutrients in NPK 5-10-15.

A. 1:2:2
B. 1:2:3
C. 1:3:1
D. 2:1:3

Question 40:

• WAEC 2020

Which of the following methods of irrigation is most efficient in terms of water conservation?

A. Flood irrigation
B. Furrow irrigation
C. Border irrigation
D. Drip irrigation