Virology is the

• A) study of Insects
• B) study of viruses
• C) study of Nematodes
• D) study of Bacteria

Flood irrigation is mainly used in

• A. arid area
• B. subtropical area
• C. tropical area
• D. sloppy area

In a tabular form, discuss cocoa, yam and millet production under the following sub-headings: (a) climatic requirement; (b) soil requirement; (c) cultural practices; (d) method of propagation.

The diagram below shows parts of a plough. Study it and answer this question.

Which of the following functions is not associated with the part labelled I?

• A. Inverting of furrow slice
• B. Cutting through soil
• C. Pulverizing of the slice in some ploughs
• D. Enabling the plough to roll over obstacles

Moths,aphids and mealy bugs cause damage to crops by their

• A. piercing and sucking activities
• B. piercing and chewing activities
• C. chewing and biting activities
• D. boring and chewing activities

(a) State six reasons why farm accounts should be kept by a farmer.

(b) Prepare a profit and loss account for Ada Farms, for the year ending December, 1993 using the following information.

(i) cost of maize seeds- N1,500.00

(ii) cost of fertilizer - N1,600.00

(iii) cost of insecticides - N1,000.00

(iv) tractor hiring- N1,000.00

(v) cost of herbicides- N1,200.00

(vi) cost of cassava stems N1300.00

(vii) sales of maize- N30,000.00

(viii) sales of yam tubers - N10,500.00

(ix) sales of cassava stems - N15,000.00

(x) transportation cost - N1,500.00

(xi) cost of processing cassava tubers - N 2,500.00

(xii) sales of cassava stems - N 22,00.00

(xiii) wages of workers N 8,000.00

(xiv) miscellaneous expenses - N 2,000.00

(xv) maize consumed - N 500.00

(xvi) yam consumed - N 800.00

(xvii) opening valuation - N45,000.00

(xviii) closing valuation - N15,000.00

The purpose of the part labelled I in the experiment illustrated below is to

• A. allow proper aggregation of soil particles
• B. allow even evaporation of water
• C. prevent water from escaping
• D. distribute water around the soil

The chemical weathering that is responsible for changing haematite to limestone is

• A. hydration
• B. solution
• C. oxidation
• D. hydrolysis

(a) Explain the following terms: (i) appreciation (ii) depreciation (iii) s salvage value

(b) List two items on the farm which will normally appreciate value.

(c) A farmer bought a fairly used Fiat tractor for 312,000.00 in 1998. He later sold it for 33,000.00 in 1997 when he discovered that it was expensive to maintain. Find the tractors: (i) salvage value (ii) overall depreciation; (iii) annual depreciation

The windmill is normally used as a source of power in

• A. pumping well water
• B. soil drainage
• C. ridging
• D. erosion control