General Agriculture

Question 1

1The maize stem borer is controlled by

Easy

A. removing leaves only B. early planting and insecticides C. adding water D. harvesting late

Question 2

2The economic threshold in pest management is the pest level at which

Hard

A. control action should be taken to prevent economic loss B. pests are harmless C. crops are harvested D. pests are zero

Question 3

3Integrated pest management combines

Hard

A. several control methods to keep pests below damaging levels B. only chemicals C. only burning D. no control

Question 4

4The insect that spreads the cocoa swollen shoot virus is the

Easy

A. capsid B. termite C. locust D. mealybug

Question 5

5Weeds harm crops mainly by

Easy

A. shading the soil helpfully B. competing for light, water and nutrients C. adding nitrogen D. pollinating crops

Question 6

6The swollen shoot disease of cocoa is caused by a

Easy

A. bacterium B. virus C. fungus D. nematode

Question 7

7Cassava mosaic disease is spread mainly by

Easy

A. wind only B. whiteflies and infected cuttings C. earthworms D. birds

Question 8

8Cocoa swollen shoot disease is spread by

Hard

A. whiteflies B. mealybugs C. thrips D. aphids

Question 9

9A systemic pesticide

Hard

A. acts only on contact B. is a fertiliser C. kills only weeds D. is absorbed and moves within the plant

Question 10

10Using natural enemies to control pests is

Easy

A. cultural control B. biological control C. chemical control D. mechanical control