Agriculture Questions and Answers - Form 3 Mid Term 1 Exams 2022

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Questions

  1. Define hybrid vigour as used in livestock production (1mk)
  2. Outline three disadvantages of artificial insemination in cattle management (3mks)
  3. Give any three reasons why bees swarm from a hive ( 3mks)
  4. Below is a diagram of a sheep with some parts labeled A, B, and C. Study the diagram and answer the questions that follow.
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    1. What operation is usually carried out on the part labeled A during a sheep’s early stages of life? (1mk)
    2. Why is it necessary to carry out the operation in (i) above? (2mks)
    3. At what stage of sheep should the operation in (i) above be carried out? (1mk)
    4. Give two methods of carrying out the operation in (i) above (1mk)
    5. Which operation is usually carried out on part labeled B (1mk)
  5. Give four signs which indicate that a sow is about to farrow (4mks)
  6. Give three reasons for treating timber to the used in construction of farm buildings (3mks)
  7. State six features of an ideal calf pen (3mks)
  8. State four features of a good maize granary.(4mks)
  9. Name two notifiable diseases in cattle. (1mk)
  10. State two ways by which proper feeding contribute to disease control in livestock. (1mk)
  11.               
    1. Give two causes of blossom end rot in tomatoes (2mks)
    2. State two methods of controlling blossom end rot in tomatoes (2mks)
  12. What four aspects of rainfall should a Kenyan farmer consider while growing crops (2mks)
  13. One of the recommended ratio of mixing ingredients for making Concrete block is 1:3:4.
    1. Name ingredients represented by the numbers 1, 3 and 4 in the mixture. (3mks)
    2. If stronger concrete blocks were to be made, name the ingredient that would be increased. (1mk)
    3. State three properties of concrete that make it suitable for constructing farm buildings. (3mks)
  14. Describe the life cycle of a three- host tick. (8mks)

Marking Scheme

  1. Define hybrid vigour as used in livestock production (1mk)
    • Increased performance as a result of crossing two superior unrelated breeds

  2. Outline three disadvantages of artificial insemination in cattle management (3mks)
    • Harmful traits/ diseases can spread fast
    • Requires trained personnel/ skills
    • Laborious
    • Low chance of conception due to poor timing/ death of sperms

  3. Give any three reasons why bees swarm from a hive ( 3mks)
    • Bad smell
    • Overheating
    • Lack of food/ water
    • Sick/ infertile queen
    • Attack by predators/ destruction of brood
    • Too much noise

  4. Below is a diagram of a sheep with some parts labeled A, B, and C. Study the diagram and answer the questions that follow.
    1. What operation is usually carried out on the part labeled A during a sheep’s early stages of life? (1mk)
      • Docking/ Tailing

    2. Why is it necessary to carry out the operation in (i) above? (2mks)
      • To facilitate mating/ to ease mating in ewes
      • To control blow fly infestations
      • To ensure uniform distribution of fat

    3. At what stage of sheep should the operation in (i) above be carried out? (1mk)
      • 1-2 weeks after birth

    4. Give two methods of carrying out the operation in (i) above (1mk)
      • Use of elastrator and rubber ring
      • Use of sharp knife
      • Use of a docking iron

    5. Which operation is usually carried out on part labeled B (1mk)
      • Hoof trimming

  5. Give four signs which indicate that a sow is about to farrow (4mks)
    • Restlessness
    • Loss of appetite
    • Udder/ teats enlarge
    • Present of milk in the teats 24hrs before farrowing
    • Vulva enlarges
    • Muscle on either side of the tail/ pelvic bones slackens
    • Sow prepares a nest

  6. Give three reasons for treating timber to the used in construction of farm buildings (3mks)
    • To prevent warping/ bending / twisting
    • To prevent rotting/ damage by fungi
    • To prevent it from pest attack
    • To enable timber to achieve it maximum strength

  7. State six features of an ideal calf pen (3mks)
    • Well ventilated
    • Easy to clean
    • Leak proof
    • Well drained floor
    • Draught free
    • Spacious
    • Well lit

  8. State four features of a good maize granary.(4mks)
    • Should be raised from the ground
    • Should be leak proof
    • Should be easy to clean
    • Should be well ventilated
    • Should be rat proof/ vermin proof
    • Should be easy to toad/ offload
    • Strong enough, spacious

  9. Name two notifiable diseases in cattle. (1mk)
    • Foot and mouth diseases
    • Anthrax
    • Rinderpest
    • Lumpy skin disease
    • Rabies

  10. State two ways by which proper feeding contribute to disease control in livestock. (1mk)
    • Prevent deficiency disease
    • Improves animals and ability to resist diseases
  11.    
    1. Give two causes of blossom end rot in tomatoes ( 2mks)
      • Irregular watering of the crop/ water stress
      • Excess application of Nitrogen in early stages
      • Deficiency of element calcium in young fruits

    2. State two methods of controlling blossom end rot in tomatoes (2mks)
      • Regular watering
      • Addition of calcium into the soil
      • Mulching
      • Avoid excess Nitrogen in the soil

  12. What four aspects of rainfall should a Kenyan farmer consider while growing crops (2mks)
    • Rainfall amount
    • Rainfall reliability
    • Rainfall distribution
    • Rainfall intensity

  13. One of the recommended ratio of mixing ingredients for making Concrete block is 1:3:4,
    1. Name ingredients represented by the numbers 1, 3 and 4 in the mixture. (3mks)
      • 1 cement, 3 and, 4 ballast/ gravel

    2. If stronger concrete blocks were to be made, name the ingredient that would be increased. (1mk)
      • 1/ cement

    3. State three properties of concrete that make it suitable for constructing farm buildings. (3mks)
      • It is durable
      • It is fire proof
      • It is easy to clean
      • Can be molded into various shapes

  14. Describe the life cycle of a three- host tick. (8mks)
    • Larvae climbs on 1st host via vegetation
    • Larva feed blood on 1st host
    • Larva drop on the ground and moults into a nymph
    • Nymph climbs – onto 2nd host via vegetation
    • Nymph feeds on 2nd host
    • Nymph drops on the ground and moults into an adult
    • Adult climb on 3rd host
    • Adults feeds and mate on 3rd host
    • Mated, engorged female drops and lay eggs on the ground
    • Egg hatches into larvae

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Read 126 times Last modified on Tuesday, 05 April 2022 09:21
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