Which of the following statements is true of a pig which has only one testis?

• A. it will be sterile
• B. it can still produce viable sperm
• C. all the spermtozoa will be dead
• D. it will not be able to mate a sow

Theobroma cacao grows best in the

• A. sudan savannah zone
• B. humid rain forest zone
• C. mangrove swamp forest zone
• D. northern guinea savannah zone

The most limiting factor affecting land availability for agriculture in urban settlements is

• A. soil type
• B. topography
• C. climate
• D. population pressure

When a farmer tries to eradicate snails from pastures, he is attempting to control

• A. ticks
• B. tapeworms
• C. trypanosomiasis
• D. liver flukes

Which of the following materials can be applied to the soil in order to correct yellowing of leaves?

• A. lime
• B. urea
• C. gypsum
• D. bone meal

(a) Statefour characteristics of igneous rocks. .

(b) The table below illustrates the combined demand and supply schedule for maize.

Use it to answer the questions that follow.

(i) Draw the demand and supply curves to show the equilibrium price of maize.

(ii) Determine the excess demand for maize at a unit price of ?4.

(iii) Determine the excess supply for maize at a unit price of ?12.

The soil nutrient which is important as a constituent of plant proteins and hormones is

• A. calcium
• B. magnesium
• C. iron
• D. sulphur

The objective of crops improvement programmes is to produce the following except

• A. crop types with improved taste and processing
• B. disease-resistance crops
• C. high-yielding crops
• D. crops resistant to all pests

Which of the following plants is not a leguminous forage?

• A. Centrosema Pubescens
• B. Panicum maximum
• C. Stylosanthes gracilis
• D. Calopogonium mucunoides

The most important soil microorganism which are effective decomposers of wood in forest areas are

• A. earthworm
• B. wood beetles
• C. termites
• D. algea