Subsistence agriculture mainly involves

A. high capital input on the farm enterprise

B. food production on large scale farms

C. food production using family labour

D. mechanisation of all farm operations

The major export crops produced in the West African sub-region include

A. coffee,pepper,tomato and groundnut

B. cotton,cassava,coffee and ginger

C. cocoa,rubber,groundnut and cotton

D. cocoa,coffe,cashew and tomato

A major problem of grains storage in the rain forest zone of West Africa is high

A. temperatures

B. solar radiation

C. wind speed

D. humidity

When the government provides subsidies in agriculture,

A. farm inputs are made available to farmers at reduced prices

B. farmers obtain loans from agricultural banks

C. farmers are given extended time to repay loans

D. farming becomes less attractive

Most agricultural policies do not benefit rural communities because

A. they aim at benefiting the national economy

B. of poor implementation

C. of lack of forigen exchange to import the required expertise

D. they are formulated by non-practising farmers

Plant quarantine regulations are enforced to

A. prevent the intoduction of foreign pests and diseases

B. increase the resistance of crops to diseases

C. encourage the importation of foreign crops

D. discourage dependence on temperate crops

The primary purpose of establishing wildlife reserve is to

A. conserve animals for hunting

B. prevent extinction of wild animals

C. provide constant supply of meat for export

D. prevent wild animals from predating on other animals

The most important factor that limits agricultural production in West Africa is

A. temperature

B. wind

C. rainfall

D. light

An acidic soil can be neutralized by the addition of

A. urea

B. ammonium sulphate

C. wood ash

D. laterite

Capillarity is highest in

A. silt

B. loam

C. sand

D. clay

Which of the following describes the effects of excessive nitrogen application on the growth of maize plants?

A. high vegetative growth with low yield

B. high vegetative growth with high yield

C. low vegetative growth with high yield

D. low vegetative growth with low yield

Nitrogen is taken up by plant roots in the form of

A. nitrate ion

B. nitrite ion

C. nitric acid

D. nitrogen gas