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Name......................................................................................... Index number......................................
Date.................................................. Candidate’s signature......................
443AGRICULTURE FORM 2(THEORY) TIME: 2 HOURS
Instructions (i) Write your name and admission number in the spaces provided above
(ii) Answer all questions in section A, B and C in the spaces provided.
FOR EXAMINERS USE ONLY
SECTION QUESTIONS MAXIMUM SCORE
CANDIDATES SCORE
A 1 – 22 40
B 23 – 28 20
C 29 – 31 30
90
SECTION A (40 MARKS)Answer all the questions in the spaces provided.
1. (a) Give two methods of farming that may be considered outdated in modern agriculture. (1 mark)
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(b) Why is ranching common in arid and semi-arid areas in Kenya? (1 mark)
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.................................................................................................................................................................2. (a) State any two disadvantages of pastoral nomadism of farming (1mark)
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.................................................................................................................................................................(b) Give four reasons why farmers are encouraged to practice organic farming (2marks)
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................................................................................................................................................................3. (a) State three advantages of adding organic matter to sandy soils (1½ marks)
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.................................................................................................................................................................(b) State two methods of showing that soil is made up of different sized mineral particles
(1mark).................................................................................................................................................................
.................................................................................................................................................................4. (a) Outline two factors that would influence the depth of tillage in a seedbed for growing sweet
potatoes (2marks)
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.................................................................................................................................................................(b) Differentiate between straight fertilizer and a compound fertilizer in crop production. (1 mark)
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.................................................................................................................................................................5. State two factors that contribute to the depreciation of tools (1 mark)
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6. Name four tools that are used when laying concrete blocks during construction of a wall
(2marks) (i) ...................................................................... (ii) ......................................................................
(iii) ..................................................................... (iv) .....................................................................7. State any four disadvantages of mono-cropping (2marks)
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.................................................................................................................................................................8. Mention two ways in which plants absorbs nitrogen element from the soil (1mark)
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.................................................................................................................................................................9. State two importance of nitrogen cycle in living organisms (1mark)
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.................................................................................................................................................................10.Outline four factors that would influence the depth of tillage in a seedbed for growing sweet
potatoes (2marks)
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.................................................................................................................................................................11. (a) State four importance of irrigating crop (2marks)
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.................................................................................................................................................................(b) Under which type of farm records should each of the following items be entered? (1mark)
(i) Date of ploughing………………………………………………...……………………………….
(ii) Milk yield…………………………………………..…………………………….…………………
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12.Outline three problems associated with farm yard manures (1½ marks)
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.................................................................................................................................................................13.Give two benefits of minimum tillage (1mark)
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14.Differentiate between a seedbed and a seedling bed as used in crop production (1mark)
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.................................................................................................................................................................15.State four effects of high rainfall on agriculture production (2mark)
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.................................................................................................................................................................16.Give two importance of planting crops at the correct spacing (1mark)
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.................................................................................................................................................................17.State two ways in which mulching helps to control weeds in crop production (1 mark).................................................................................................................................................................
.................................................................................................................................................................18.State four properties of nitrogenous fertilizers (1mark)
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.................................................................................................................................................................19.Name the plant used for vegetative propagation of each of the following plants (1mark)
(a) Sisal ……….……………………...…………
(b) Pyrethrum………..………………………………….4
20.List down two ways of modifying soil pH in the field of crops (1mark)
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.................................................................................................................................................................21.A certain soil was deficient in all the three primary macro-nutrients in a field test, it was found that
the following should be applied, 60kgN, 30KGP2O5 and 40kgK2O per hectare. If the fertilizer available are Sulphate of ammonia (20%P2O5) and murate of potash (50%K2O)
Calculate the amount of:(a) Sulphate of ammonia (SA) required per hectare (1½ marks)
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.................................................................................................................................................................(b) Single super phosphate (SSP) required per hectare (1½ marks)
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.................................................................................................................................................................(c) Give any four conditions when small scale farming is preferred by farmers (2marks)
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.................................................................................................................................................................22.Give reasons for carrying out each of the following practices in crop farming (2marks)
(a) Seed inoculation
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SECTION B (20 MARKS)Answer all the questions in the spaces provided.
23.The diagrams below illustrates some soil structures, study them and answer the questions that follow.
(a) Identify the soil structure V and W (1mark)
V ………………………………………………………………….
W ………………………………………………………………….(b) Where is soil structure V commonly found? (½ mark)
.................................................................................................................................................................(c) State two ways through which soil structure W may influence crop performance (1mark)
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.................................................................................................................................................................24.The diagram below illustrates an investigation on a property of soil
If the levels of water shown in the diagram were observed after three hours(a) Name the property of the soil being investigated ( ½ mark)
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WV
(b) What is the relationship between the soil property named in (a) above and the size of the soil particle (1mark)
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.................................................................................................................................................................(c) What are the characteristics texture of soil types T and V (2 marks)
T …………………………………………..….…… V …………………………………………..….……(d) Name the soils type T and U (1 mark)
T …………………………………………..….…… U …………………………………………..….……25.Study the farm tools below and answer the questions that follows
(a) Identify tools K and M (1mark)
K ……………………………………………………….
M ……………………………………………………….(b) State three functional differences between tool K and M (1½ marks)
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.................................................................................................................................................................(c) Give one reason for having part X on tool K ( ½ mark)
.................................................................................................................................................................(d) State three maintenance of part labeled X in tool K. (1 ½ marks)
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XKM
26.Below is a diagram that illustrates one of the field practices carried out on some crop. Study the diagram and answer the question that follows
(a) (i) Identify the practice ( ½ mark)
.................................................................................................................................................................(ii) Name parts labeled Nand M above (1mark)
N …………………………………………..….…… M …………………………………………..….……(b) List down threeproblems faced by the farmer who does not carry out the practice shown above
(1 mark)
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.................................................................................................................................................................27.The diagram below illustrates one the common workshop tool and equipment
(a) Identify the above layout tools in workshop tools of the farmer (1mark)
.................................................................................................................................................................(b) Name part named A and B (1mark)
A …………………………………………..….…… B …………………………………………..….……
(c) State one use of the tool in workshop ( ½ mark)
.................................................................................................................................................................(d) What’s the purpose of part B ( ½ mark)
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A
B
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28.The diagrams below shows two germinating plants seedlings, study them carefully and then answer the questions that follows
(a) Name the type of germination shown by seed A and B (1mark)
A ……………………………………………………………………………………………………..
B ……………………………….……………………………………………………………………..
(b) Which seeds required deep planting ( ½ mark)
.................................................................................................................................................................(c) Give a reason for your answer in (b) above ( ½ mark)
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.................................................................................................................................................................(d) Which crops gave seedlings A and B (1mark)
A …………………………………………..….…… B …………………………………………..….……
SECTION C (30 MARKS)Answer all the questions in this section.
29. (a) Describe the process of the water treatment using the chemical method (6 marks)
(b) Describe four measures that should be taken to minimize water pollution in the farm. (4
marks)
30. (a) State five body conformation of the dairy heifer (5marks)
(b) Explain five reasons for keeping the health records on the farm (5marks)
31. (a) Explain any five factors determining seed rates in crop production (5marks)
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(b) Describe five biological process weathering of rocks in agriculture. (5 marks)
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