(a) State three advantages and two disadvantages of manual labour. (b) Enumerate four qualities of good draught animals. (c) State two precautions to be observed when using draught animals. (d) Explain how power from each of the following sources are harnessed for use on the farm: (i) sun, (ii) biogas.

 (a) List ten poultry equipment and state the main use of each. (b) Name two parts of a tractor involved in the coupling and operation of implements. (c) State four maintenance practices of a tractor. 

(a) Define climate and state three of its importance in agriculture. (b) Explain five ways in which high rainfall affects agricultural production. (c) State the forms in which water exist in the soil. (d) Mention three ways through which soil water may be lost

(a)In an experiment on soil porosity, the following measurements were taken and recorded: Volume of dry soil = 50 cm³, Volume of water = 50 cm³, Total volume of soil and water = 75 cm³. Use the above information to (i) find the volume of air space in the soil sample. (ii) calculate the porosity of the soil sample. (b) Mention three reasons why soil porosity is important in agriculture. (c) State four characteristics of each of igneous and sedimentary rocks.

(a) Define the term weed (b) Describe four methods of weed control. (c) Give six reasons for controlling weeds on the farm.