Waec Agricultural Science 2006 Past Questions and Answers

Question 36:

• WAEC 2006

Rosette disease of groundnut is transmitted by

A. An eelworm
B. A grasshopper
C. A whitefly
D. An aphid

Question 37:

• WAEC 2006

The control of spear grass on the farm is difficult because

A. It produces a large quantity of seeds
B. It is easily propagated by suckers
C. It has a very persistent rhizome
D. Seeds presist in the soil for a long time

Question 38:

• WAEC 2006

The use of fungal pathogens to control dodder weed is a

A. Physical method
B. Mechanical method
C. Biological method
D. Cultural method

Question 39:

• WAEC 2006

Hybrid vigour in crop improvement is brought about through

A. Intorduction
B. Mass selection
C. Inbreeding
D. Cross breeding

Question 40:

• WAEC 2006

Which of the following structures is not a part of the digestive tract of pigs?

A. Oesophagus
B. Proventriculus
C. Duodenum
D. Colon