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Agriculture paper 2 questions and answers kcse exams

27. Study the illustration below and answer the questions that follow.

     i) Identify the equipment represented by the illustration                                                              (1mk)

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     ii) What is the use of the equipment?                                                                                            (1mk)

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  iii) Name the parts labeled A and B                                                                                                 (1mk)

       A …………………………………………………………………………………………………………..

        B…………………………………………………………………………………………………………..

iv) What is the function of the part labeled A and B                                                             (2mks)

   A …………………………………………………………………………………………………………..

   B …………………………………………………………………………………………………………..

28. State any three general uses of solar energy                                                                                (3mks)    …………………………………………………………………………………………………………..

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SECTION C (40MARKS)

Answer any two questions in this section in the spaces provided at the end of the section

29. a) Outline  the procedure  in construction of a  barbed wire  fence                                             (12mks)

       b) List any four wood preservatives                                                                                           (4mks)

      c) Give four factors that will determine the choice of farm building materials                           (4mks)

30. a) describe the daily  maintance and  servicing of  a tractor before use                                       (15mks)

      b) State one function of each of the following parts of a tractor engine.                                                (5mks)

         i) Fly wheel

          ii) Ignition coil

         iii) Thermostat

       iv) Injector

       v) Piston

31.a) state  six  effects  of parasites                                                                                                    (6mks)

     b) Describe the life cycle of Taenia solium species of tapeworm                                      (10mks)

     c) State four control measures of the tapeworm                                                                           (4mks)

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SECTION A (30MARKS)

1. State two saddle back breeds of pigs                                                                                             (1mk)

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2. Outline two reasons for raddling in sheep management                                                                 (1mk)

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3. State four factors considered when formulation livestock ration                                                  (2mks)

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4. State any four reasons for castrating male piglets                                                                          (2mks)

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5. Mention four disadvantages of using steel materials for construction of farm structures             (2mks)

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6. State two factors that enable ruminant animals to break down fibrous material                            (1mk)

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7. List four farm machines implements that obtain power from P.T.O shaft of a tractor                  (2mks)

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8. State four ways of minimizing disowning of lambs by ewes                                                        (2mks)

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9. State the gestation period of the following farm animals                                                               (1mk)

        i) Pigs ………………………………………………………………………

       ii) Rabbits ………………………………………………………………………………….

10. What are the methods of stocking bees? Give two.                                                                     (2mks)

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11. Give two reasons for placing a polythene sheet on a foundation of farm buildings                    (1mk)

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12. List  two  tractor  drawn implements used for  breaking  hardpan  in  a crop field                     (1mk)

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13. State two ways that show how good feeding help to control livestock diseases                                     (1mk)

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14. Give two examples of feed additives                                                                                           (1mk)

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15. List four maintenance practice carried out on a cross-cut saw                                                    (2mks)

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16. Name two diseases that affect female animals only                                                                     (1mk)

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17. State any three machines which are used for harvesting crops                                                    (1 ½ mks)

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18. List any three dual purpose breeds of cattle.                                                                               (1 ½ mks)

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19. What is “calf crop” in beef production?                                                                                      (1mk)

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20. State four disadvantages of breeding a dairy heifer before attaining right size and body weight (2mks)

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21. Mention the functions of the following parts of a ruminant stomach                                          (1mk)

       i) Caecium

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      ii) Colon

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22. Give any example of fresh cold water fish                                                                                   (1mk)

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SECTION B (20MARKS)

Answer all the questions in this section in the spaces provided;

23. Name two chemical methods used in deworming cattle                                                              (2mks)

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24. A deep little poultry house measures 9mx3m. Suppose the amount of space allowed for one

       bird is 0.27m2.Calculate the number of birds that can be kept comfortably in the house. Show

       your working                                                                                                                                (2mks)

25. The following is a diagram illustrating a floor of a   farm structure. Study it and answer the

      questions below:-

Name the parts label led 1-4                                                                                                   (4mks)

   1 …………………………………………………………………………………………………………..

    2…………………………………………………………………………………………………………..

    3…………………………………………………………………………………………………………..

    4…………………………………………………………………………………………………………..

26. Identify the following tools and state their functions                                                                  (4mks)

C  
A  
B   D  

     Identify

      A…………………………………………………………………………….

      B………………………………………………………………………………….

     C……………………………………………………………………………

      D…………………………………………………………………………………

1.

  • Essex
  • Wessex                                                                                                                                    ½ x2=1 mk

2.

  • To identify mated ewes
  • To indicate active rams hence help in culling
  • Identify the sire of each lamb                                                                                     ½ x2= 1 mk

3.

  • Nutrient composition
  • Cost of feed
  • Feed stuff/ food available
  • Level of production
  • Animal age/ weight/ body size
  • Animal species
  • Ingredients available                                                                                                   ½ x4=2 mks

4.

  • Promote docility
  • Improve meat quality
  • Control breeding diseases
  • Control interbreeding/ control hereditary defects
  • Improve growth rate                                                                                                   ½ x4=2 mks

5.

  • Steel is expensive
  • Require high skilled labour
  • Heavy and difficult to transport
  • Rusts easily
  • Low workability                                                                                                         ½ x4=2 mks

6.

  • Presence of micro- organism
  • Ability of the animal to regurgitate the feed material taken and then chewing.
  • Appropriate PH % of the tract                                                                                    ½ x4=2 mks

7.

  • Boom sprayer
  • Spray race
  • Rotavator
  • Maize Sheller
  • Mowers                                                                                                                       ½ x4=2 mks

8.

  • Steaming up of ewes to have milk to be suckled
  • Use of lambing pens
  • Ewes as made to recognize lambs after lambs
  • Blind folding ewes to activate maternal instinct
  • Attend/ treat inflamed udders/ painful                                                                       ½ x4=2 mks

9.

  • Pig 112 – 15 days
  • Rabbits 28 – 32 days                                                                                                  ½ x2=1 mk

10.

  • Use of swarm net
  • Use of catcher box
  • Placing the hire in a strategic position  for bees to occupy                                         ½ x2=1 mk

11.

  • To prevent termites from rising up to the wall
  • To reduce moisture rising up the wall

12.

  • Chised plough
  • Subsoiler                                                                                                                     ½ x2=1 mk

13.

  • Control deficiency diseases
  • Impact resistance to diseases
  • Good physical appearance/ good coat cover                                                              ½ x2=1 mk

14.

  • Hormones
  • Antibiotics
  • Medicate                                                                                                                     ½ x2=1mk

15.

  • Store the saw properly after use
  • Oil the blade for long storage to avoid rust
  • Sharpen the teeth properly
  • Tighten the handle screw if loose                                                                               ½ x4=2 mks

16.

  • Mastitis
  • Milk fever                                                                                                                   ½ x2=1 mks

17.

  • Combine harvester
  • Forage harvester
  • Potato lifter
  • Mowers                                                                                                                       ½ x3=1 ½  mks

18.       Simmental

  • Red poll
  • Sahiwal                                                                                                                       ½ x3=1 ½ mks

19.A group of calves kept according to age                                                                                       1×1=1 mk

20.

  • Result in stunted growth
  • Problem during calving
  • Low milk yield
  • Production lifespan may reduce
  • Production of under weight calves                                                                             ½ x4=2 mks

21.

  • Caecium – contain micro- organism for digestion of cellulose
  • Colon – absorption of water                                                                                       ½ x2=1mk

22. Trout

SECTION B

23.

  • Use of caustic potash stick (potassium hydroxide)
  • Use of dehorning collodion                                                                                        1×2=2 mks

24.       One bird occupies 0.27m2

            Area available 9m x 3m= 27m2

            1 bird        0.27m2

                  ?          27m2

                        = 27m2    = 100 birds        1×2=2mis

                           0.27m2

25.

  1. welted cement
  2. Site murram
  3. mortar
  4. Hard core/ big stones                                                                                                  1×4=4 mks

26

Tin snip – cutting thin metal sheets

Spokes have – smoothing curved and circular surfaces

Ceardeners trowel – uprooting seedlings during transplanting

Brace drill – boring/ drilling holes in wood                                                                1×4=4 mks

27.       i) Stir up pump/ bucket pump                                                                                     1×1=1 mk

            ii) Spraying livestock with acaricide                                                                           1×1=1 mk

            iii) A – Nozzle

                  B – lance handle                                                                                                   ½ x2=1 mk

            iv) A – Atomises the acaricide into spray

                 B – Direct the nozzle to the parts to be sprayed                                                    1×2=2 mks

28. Lighting houses

  • Drying farm produce
  • Cooking
  • Distillation of clean drinking water

SECTION C

29.       a) Procedure in construction of a barbed wire fence

  • Slash/ clear vegetation around fence line 2 m wide
  • Measure and mark spots for holes using pegs
  • Dig holes 60cm – 90cm deep depending areas where the poles are to be placed
  • Assemble poles and other requirement materials
  • Drop pole and struts at respective points
  • Prepare concrete mixture
  • Erect poles in pole holes
  • Align the poles and put concrete using spade or soil
  • Compact the concrete in holes
  • Allow to settle for a few days while curing
  • Put barbed wire around using appropriate tools
  • Tighten the wire using wire strainer
  • Mail barbed wire using fencing staple at required distance
  • Put droppers along the fence as required                                                        12×1=12 mks  

b) Wood preservatives

  • Creosote
  • Old engine oil
  • Paint/ far/ tanesc
  • Copper sulphate
  • Sodium dichromate
  • Arsenic pentoxide
  • Pentachloroplenol
  • Triputyl tin oxide                                                                                                        4×1=4 mks

c) Choice of farm building materials

  • Cost of materials
  • Availability/ strength of the material
  • Workability
  • Type of enterprise                                                                                                       4×1=4 mks

30.       a)

  • Oil bath air cleaner – check for oil level and add more if low
  • Check for cleanliness in oil bath and wash bowl – replace oil if dirty
  • Battery – check for electrolyte level and top up if low
  • Fuel – check and fill if low
  • Radiation- check for water level and top up with clean water if low
  • Check for trash in tins and remove if any
  • Fan belt- checks for tension and tighten if loose
  • Engine oils – check oil level using a dip stick and add more if level is low
  • Tyres- check for tyre pressure and add if low
  • Bolts, nuts and pins- check for tightness and tighten if loose
  • Grease all the moving parts
  • Check for any physical abnormalities and rectify accordingly 
  • Check sediment bowl and drain if dirty
  • Use of right type of oil                                                                                               15×1=15 mks

b)   i) Flywheel – maintain the rotational motion of the crankshaft

      ii) Ignition coil – steps up the voltage from the battery

      iii) thermostat – controls engine temperature

      iv) Injector – Atomises the fuel into very fine spray/ injects fuel into cylinder

      v) Piston – compresses air/ fuel mixture in the cylinder/ expels exhaust gases/ transmits power

31.       a)

  • Cause anaemia
  • Deprive the hoof animal of food
  • Cause injury and damage to animal tissue and organs
  • Transmit diseases
  • Cause irritation
  • Cause obstruction to internal organs                                                                                       6×1=6 mks

b)

  • Human beings drop tapeworm segments/ progloltudes together with their faeces
  • Eggs are released from the segment. Once outside the human body
  • Eggs are picked by pigs when feeding
  • Eggs hatch into embryos in the intestine of pigs
  • The embryo penetrate the intestinal wall and enter into the blood stream
  • Embryo localize in the liver
  • Embryos are disturbed throughout the muscle where they become cyst/ bladder worms
  • Bladder worms get into human beings through eating under cooked pork/ bacon
  • Once inside the human intestines the cyst wall dissolves and the bladder worm attach themselves to the wall of intestines
  • Bladder warm develop into adult tape worm
  • Adult tape worm releases segments/ progloltides containing fertilized eggs with human faeces     

c)

  • Use prophylactic drugs/ deworms to kill the internal parasites
  • Keep animal houses clean and disinfected
  • Practice rotational grazing
  • Use of clean feeding and watery equipment
  • Use of latrines/ proper disposal of human faeces
  • Proper cooking of meat                                                                                                           4×1=4 mks