A groundnut variety produces a steady yield of 350kg per hectare. What will be the yield of the variety on a 10-hectare farm?

A. 35kg

B. 350kg

C. 3,500kg

D. 7,000kg

Thinning is a farm operation in which

A. empty spaces where seeds did not germinate are replanted

B. the number of seedlings per stand is reduced to one or two

C. fertilizers and manures are applied to crops

D. effort is made to control pests

Which of the following plants is not a pasture grass?

A. Pennisetum purpureum

B. Axonopus compressus

C. Stylosanthes gracilis

D. Panicum maximum

One advantage of cross breeding is that the

A. offspring resemble the recessive parent

B. yield of the offspring may not be comparable to those of the parents

C. offspring performs better than the average of the parents

D. offspring cannot survive adverse environmental conditions

Assuming that brown colour is dominant over black colour in cowpea, what percentage of the F1 will have brown colour , if a homozygous brown cowpea is crossed with a homozygous black cowpea?

A. 100%

B. 75%

C. 50%

D. 25%

Ornamental plants are commonly used for the following purposes except

A. for exterior decorations

B. as sources of perfumes

C. provision of shade

D. as bedding materials for animals

Hibiscus and croton are examples of

A. ground covers

B. hedge plants

C. lawn plants

D. avenue trees

A disadvantage of vegetative propagation is that

A. plants are true to type

B. fruits are small in size

C. plants take a long time to mature

D. diseases are easily transferred to offspring

An effective method of preventing viral diseases in crops is by

A. treating the seeds with fungicides

B. practicing crop rotation

C. regular spraying of crops

D. planting resistant varieties

A groundnut plant showing stunted growth with yellow or mottled leaves is likely to be infected with

A. blight

B. tikka

C. rosette

D. anthracnose