AGRICULTURE PAPER 2 - 2020 KCSE PREDICTION SET 1 (QUESTIONS AND ANSWERS)

• Answer ALL the questions in section A and B 
• Answer any two questions in section C
  

SECTION A (30 MARKS)

Answer all the questions in this section.

1. State two reasons of using farm tools and equipment in the farm. (2mks)
2. State three reasons that would make a farmer opt to rear indigenous cattle breeds instead of exotic cattle breeds. (1 ½ mks)
3. State three characteristics of Bacterian type of camel. (1 ½ mks)
4. Name four factors that influence the pulse rate of an animal. (2mks)
5. State three signs of attack by endoparasites a farmer can observe. (1 ½ mks)
6. State four factors that determine the amount of food given to an animal. (2mks)
7. Name three reasons that would make a farmer use a machakos dip instead of a plunge dip to control ticks.             (1 ½ mks)
8. State four factors considered when selecting construction materials. (2mks)
9. Name three methods a farmer can use when selecting livestock for breeding. (1 ½ mks)
10. Mention three signs of heat in a doe. (1 ½ mks)
11. Mention four reasons that would make a farmer carry out identification to his herd. (2mks)
12. State two diseases that commonly affect bees in bee farming. (2mks)
13. State four methods a farmer can use when preserving fish after harvesting. (2mks)
14. State four factors that determine the choice of poultry rearing system that a farmer chooses to use.(2mks)
15. State one significance of mobile calf pen in calf rearing. (1mk)
16. State two disadvantages of a two stroke engine. (1mk)
17. State two factors that could cause sudden stopping of a tractor engine. (1mk)
18. State four disadvantages of animal drawn implements over tractor drawn implements. (2mks

SECTION B (20MARKS)

Answer all questions in this section.

19. The diagram below shows a tractor drawn implement. Study it and answer the questions that follow.
    
    
    1. Name the parts A, B, C and D. (4mks)
    2. State two advantages of using the above implement over mould- board plough. (2mks)
    3. State the function of the parts labeled. (2mks)
       1. A
       2. D
20. The diagram below shows livestock parasites. Study the diagrams and answer the questions that follow.
    
    
    1. Identify the parasites X and Y above.   (2mks)
    2. State two effects that are caused by the parasite labeled X on the animal’s body. (2mks)
    3. Name one disease transmitted by parasite labeled X above. (1mk)
    4. State three measures taken to control the parasite labeled Y above. (3mks)
21. Study the diagram below and answer the questions that follow.
    
    
    1. Identify the livestock equipment marked E above. (1mk)
    2. State two reasons that make branding be discouraged as a method of livestock identification.(1mk)

SECTION C (40 MARKS)

Answer any two questions.

22.  
    1. State five factors that predispose livestock to diseases. (10mks)
    2. State and explain five factors a farmer will consider when siting beehives in the farm. (10mks)

23.  
    1. Briefly state and explain five equipment a farmer will need when milking and state their uses.(10mks)
    2. Explain five factors to consider when selecting a breeding stock. (10mks)

24.  
    1. State and explain four materials collected by bees. (8mks)
    2. State and explain the use of four equipments a honey harvester would require to have when harvesting honey.       (8mks)
    3. List four main reasons that make fish farming popular. (4mks)

MARKING SCHEME

SECTION A (30 MKS)

1. Reasons of using farm tools and equipment in the farm. 
   •  to increase efficiency on the farm
   • to enhance production
   • to enhance safety on the farm 2x1=2mks

2. Reasons that a farmer opts to rear indigenous cattle breeds over the exotic breeds. 
   •  they can withstand high temperatures
   • they are capable of walking for long distances in search of pasture and water.
   • they are more resistant to most of tropical diseases and pest attack
   • they can survive on poor quality pastures 3 x ½ =1 ½ mks

3. characteristics of bacterian type of camel. 
   •  it has two humps
   • it is heavy and has short legs
   • it lives in cold region hence has thick and long coat 3x ½ =3mks

4. Factors that influence the pulse rate of an animal. 
   •  the degree of excitement
   • the age of the animal
   • the sex of the animal
   • physiological status of the animal e.g. pregnancy 4x ½ =2mks

5. Signs of attack by endoparasite a farmer can observe.   
   •  loss of weight and emaciation
   • pot bellied
   • the animal will suffer indigestion
   • anaemic condition due to sucking of blood
   • swollen and painful abdomen
   • dullness and the animal appearing depressed 3x ½ =1 ½ mks

6. Factors that determine the amount of food given to an animal. 
   •  body size or weight of the animal
   • environmental conditions within which the animal
   • physiological condition of the animal
   • level of production
   • purpose for which the animal is kept 4x ½ =2mks

7. Reasons why a farmer may use machakos dip instead of a plunge dip to control ticks. 
   •  scarcity of water
   • shortage of capital
   • small number of herds 3x ½ = 1 ½ mks
8. factors considered when selecting construction materials. 
   •  availability of materials
   • cost of materials
   • suitability of materials
   • durability of materials
   • strength of the material
   • workability of the material 4x ½ = 2mks

9. Name three methods a farmer can use when selecting livestock for breeding. 
   •  mass selection
   • progeny testing
   • contemporary comparison 3x ½ =1 ½ mks

10. signs of heat in a doe. 
    •  restlessness
    • frequent urination
    • swollen vulva
    • doe throws itself on its sides
    • tries to contact other rabbits in the next hutch 3x ½ =1 ½ mks

11. Reasons for carrying out identification to the herds.
    •  for selection and breeding
    • disease control and treatment
    • feeding purpose
    • record keeping
    • culling         4x ½ =2mks
12. Two diseases that affect bees commonly on the farm
    •  acarive disease
    • American foul brood disease

13. Methods a farmer can use when preserving fish after harvesting. 
    •  freezing
    • salting
    • sun drying
    • smoking       4x ½ =2mks

14. Factors that determine the choice of poultry rearing system. 
    •  availability of land
    • availability of appropriate equipment
    • availability of capital
    • security   etc.   4x ½ =2mks

15. Significance of mobile calf pen in calf rearing. 
    •  prevent accumulation/buildup of parasites
    • prevent accumulation of dung that may lead to dampness 1x1=1mk

16. Disadvantages of two stroke engine.  
    •  they produce less power
    • they are inefficient in burning fuel to produce power
    • they are air cooled thus limiting the size of engine 2x ½ =1mk

17. Factors that could cause sudden stopping of a tractor engine.
    •  poor terminal conditions
    • faulty ignition system                               2x ½ =1mk

18. Disadvantages of animal drawn implements over tractor- drawn implements.
    •  are tedious than the tractor drawn implement
    • more than one person is required to guide the plough and the animals
    • animals are slower than the tractor
    • animals can be attacked by diseases in some areas
    • animals requires extra piece of land for pastures and fodder crops.

SECTION B (20 MKS)

18.  
    1. A         furrow wheel or rear thrust
       B         beam
       C         disc
       D         disc scrapper                         4x1 = 4mks
    2.  Advantages of using the above implement over mould board plough.
       •  good on rough field with stones, stumps or roots not easily broken by obstacles
       • good on wet, heavy and sticky soils
       • good on hard and dry soils by cutting various depth
       • can be used on soil prone to soil erosion  2x1 = 2mks
    3.  
       1. A - for balancing the whole implement
          -also used to adjust the depth of plough
       2. D - to remove wet soils from the disc
          -Aid in the turning and inverting of the furrow slice
19.  
    1. X – tsetse fly
       Y – tape worm                           2x1=2mks
    2. Effects of parasite X
       • transmit Nagana to the livestock and sleeping sickness in human. (trypanosomiasis)
       • cause anaemia due to sucking of blood
       • damage the skins and the hides of animals                 2x1=2mks
    3. Disease transmitted by the parasite X. 1x1 =1mk
       trypanosomiasis
    4. measures taken to control the parasite labelled Y.
       •  keep house clean and disinfected
       • practice rotational grazing
       • keep the feeding and watering equipment clean
       • proper meat inspection
       • proper cooking of meat
       • use of prophylactic drugs                                  3x1 =3mks
20.  
    1. E- halter                 1x1 =1mk
    2. Reasons why branding is discouraged as a method of identification.
       •  causes a lot of pain to the animal
       • it reduces quality of the hides and skin
       • causes wounds which on healing leaves a scar.                      2x1 = 2mks
    3. caponisation is the act of making a male birds lose their male characteristics.

SECTION C (40 MKS)

22.  
    1. Factors that predispose livestock to diseases.     5x2 =10mks
       •  The age of the animal
       • The breed of the animal
       • The sex of the animal
       • The colour of the animal
       • The species of the animal
    2. Factors a farmer may consider when sitting a beehive in the farm. 5x2=10mks
       •  location of dwelling places
       • accessibility to water sources
       • nearness to nector producing flowers
       • sunlight
       • quietness of a place explained       5x2=10mks

23.  
    1. Equipment used by the farmer in milking
       •  udder cloth/ towels – for washing and drying the udder
       • milking jelly - prevent teats from crucking
       • warm water – washing the udder to remove dirt
       • milking pails/buckets – for milking
       • strip cup – defecting mastitis
       • milk cans/churns – for storage and transportation
       • milking stool – for a milkier to sit on as he/she milk             10mks
    2. factors considered when selecting a breeding stock
       •  physical fitness
       • health
       • level of performance
       •  age
       • body conformation
       • quality of the products
       • temperament/ behavior
       • adaptability
       • mothering ability
       • prolificacy 5x2 = 10 MARKS

24.  
    1. four materials collected by bees 
       •  water – for drinking and cooling the hive
       • propolis – for sealing cracks and services in the hives
       • pollen grains – from flowers. Fro feeding the brood and queen bee
       • nector – from flowers.
       • Used as bees main food.
       • Used for making honey          4x2 = 8 MARKS
    2. Equipments for harvesting honey
       •  protective gear – to protect the person from the stings
       • honey container – e,g. pail or backet to hold honey or combs
       • a hive tool – used to cut honey combs
       • used to open the hive top bars
       • bee brush – used to brush the bees from the honey combs
         4X2 = 8 MARKS
    3. Reasons that make fish farming popular today
       •  supplies cheap and good protein to substitute meat
       • suitable where land is limited
       • makes fish available nearby
       • It is a source of income to farmers  4x1 = 4 MARKS