INTEGRATED SCIENCE THEORY TRIAL

*(1.a)* List six agro-based industries in your country and state the raw materials used in each industry.

*(b)* i. Discuss *five* problems normally experienced in the supply of raw
materials to agro-based industries.
ii. Suggest five possible ways of solving the problems.

*(2) (a)* State *two* functions of each of the following implements:
(i) sprayers;
(ii) harrows;
(iii) ploughs.

*(b)* Outline *six* ways by which tractor-coupled implement may be maintained.

*(c)* State *four* precautions to take when using a knapsack sprayer.

*(3) (a)* Define
i. soil structure;
ii. soil profile;
iii. soil pH.

*(b)* Discuss *five* ways in which soil structure influences crop production.

*(c)* State *five* reasons for studying soil profile.

*(4). (a)* Describe each of the following methods of irrigation:
(i) sprinkler;
(ii) furrow;
(iii) drip.

*(b)* List *five* factors to consider when choosing an irrigation system.

*(c)* State *five* problems associated with irrigation practices.

*(5). (a)* Explain the following terms as used in crop production:
(i) seed rate;
(ii) plant density.

*(b)* List *five* factors that determine the spacing of crops in the field.

*(c)* If the number of yam setts required to plant 0.04 hectare is 215 and the weight of each yam sett is 0.80 kg. What is the seed rate per hectare in tonnes?

*(d)* Name *one* pest and one disease of yam.

*(6) (a)* List *three* advantages each of asexual and sexual methods of propagation.

*(b)* Describe the steps involved in budding a citrus plant.

*(7)(a)* Explain the term malnutrition.

*(b)* State *three* symptoms of malnutrition in farm animals.

*(c)* List *five* factors to consider in formulating rations for farm animals.

*(d)* State *two* functions of each of the following nutrients in farm animals:
(i) proteins;
(ii) vitamins;
(iii) minerals.

*(8)(a)* Define the term disease in livestock production.

*(b)* State the causal   organism, prevention and *two* control measures of each of the following livestock diseases:
(i) Newcastle disease;
(ii) Anthrax;
(iii) Rinderpest.

*(c)* Name three predisposing factors of livestock diseases.