Agriculture Paper 1 Questions and Answers - Maranda High School Mock Exams 2023

INSTRUCTIONS TO CANDIDATES

•  Answer all the questions in section A and B.
• Answer any two questions in the section 

SECTION A (30MARKS)
Answer All the questions in this section

1. Give two ways in crop rotation helps in weed control. (1mark)
2. Differentiate mixed cropping and intercropping. (2marks)
3.  Give four advantages of intensive farming system. (2marks)
4. Name three practices that help to attain optimum crop population after planting. (1½marks)
5. Give two reasons why tsetse fly control is considered a land reclamation process. (1mark) 
6. Explain how leaching leads to loss of soil fertility. (1mark) 
7. Outline four observable indicators of economic development of a nation. (2marks) 
8. Give four methods of farming. (2marks)
9. State four factors that should be considered when selecting a crop to grow in an area. (2marks)
10. Identify four roles of calcium in crops. (2marks) 
11. Give two benefits of using certified seeds. (1mark)
12. Give four benefits of tissue culture in crop propagation. (2marks)
13. Give two ways in which mulching helps in water conservation. (1mark)
14.  Apart from tomatoes, name four examples of fruits and vegetables. (2 marks)
15. Distinguish hardening and hardening off as applicable in crop production. (2marks)
16. Give four ways of improving labor productivity in the farm. (2marks)
17. What is production function? (1mark) 
18. Suggest five symptoms of viral infection in crops. (2½marks)
    SECTION B 20 MARKS
    (Answer ALL the questions in this section)
19. The diagrams below illustrate field pest of maize. Study them and answer the question that follows.
    
    
    
    1.  Identify the pest labeled (2marks)
    2. Give one cultural method of controlling pest A (1 mark)
    3. Give the damage caused by the pest B (2marks) 
20. Study the diagram below and answer the questions that follow.
    
    
    1.  Name the structure above (1mark)
    2. Give two ways in which the above structure helps in soil and water conservation. (2marks)
    3. State two reasons why the above structure is not commonly used as a soil conservation method. (2marks) 
21. Below is an illustration of crop propagation. Study it and answer the questions that follow.
    
    
    1. Identify the method of propagation above. (1mark) 
    2. Identify the parts labelled (2marks)
    3. Give two advantages of the propagation method. (2marks)
22. The table below shows the format of a farm record. Study it and answer the questions that follow. 
    

    Date

    Disease symptoms

    Livestock affected

    Cost of treatment

    Remarks

    
    
    1. Identify the record illustrated above. (1mark)
    2. State four uses of the record illustrated above. (4marks)
       Section C (40 marks)
       Answer any two questions from this section.
23.  
    1. Explain five causes of land fragmentation. (5marks)
    2. State five factors that can encourage soil erosion. (10marks)
    3. State any five methods of harvesting agroforestry trees. (5marks) 
24.  
    1. State and explain four ways of classification of herbicides. (8marks)
    2. State and explain any six human factors that influence agriculture (12marks)
25.  
    1. Explain five ways in which a farmer can adjust to risk and uncertainties (10marks)
    2. Discuss any five factors that promote the rooting of cuttings. (10marks)

MARKING SCHEME

Section A. 

1.  
   • Breaks life cycle of host-specific weeds.
   • Alternate deep-rooted and shallow-rooted crops.
   • Alternating crops that are easy to weed with the one that is difficult to weed.
2.  
   • Mixed cropping- Growing different crops on the same piece of land at specific sections, while intercropping is growing different types of crops on the same piece of land together.
3.  
   • High yields.
   • Maximum use of resorces.
   • High quality produce.
   • Suitable where land is limited.
4.  
   • Thinning.
   • Gapping.
   • Weeding.
   • Pests and disease control.
5.  
   • Eliminates problem of Nagana/sleeping sickness disease.
   • Minimizes cost of production.
   • Makes place habitav=ble for man.
6.  
   • Moves nutrients to the lower horizon of the soil beyond root zones.
7.  
   • High per capital income.
   • Improved infrastructure.
   • Increased recreational facilities.
   • Efficient production methods.
8.  
   • Mixed farming.
   • Normadic pastrolization.
   • Shifting cultivation.
   • Organic farming
   • Agroforestry.
9.   
   • Size of land.
   • Climate.
   • Type of soil.
   • Capital availability.
   • Farners taste/preference.
   • Government policy.
10.  
    • Help in grain formation.
    • Raising soil ph.
    • Help in plant cell formation.
11.  
    • High yielding.
    • Free-form diseases/pathogens
12.  
    • Pathogen free.
    • Many propgaules in small space.
13.  
    • Reduces the rate of evaporation.
    • Checks speed of run off hence increases water infiltration in the soil.
14.  
    • Watermelo.
    • Brinjal.
    • Pumkins.
    • Butternut.
15.  
    • Hardening- Removal (breaking) of the top of onions prior to harvesting while hardening off is removal of the shed and reduction in watering regime to make them ready for transplanting.
16.  
    • Supervision.
    • Training.
    • Use of machines.
    • Proper remuneration.
    • Improvement of welfare NHIF,NSSF. 
17.  
    • Physical relationship between output and input.
18.  
    • Chlorosis/yellowing of leaves.
    • Leaf curling.
    • Mosaics (light green or yellow patches)
    • Rosetting.
19.  
    1.  A- Miaze stalk borer
       B- Armyworm.
    2.  Field Hygiene
       -Crop rotation
    3. Eats the leaves hence lowering the photosynthesis area. 
       -Open wounds for secondary infection. 
20.  
    1. Gabbions/poron clams. 
    2. Traps eroded materials.
       -Checks the speed of run-off.
    3.  Expensive/High cost
       -Special skills required which may not be available. 
21.  
    1. Whip/tongue grafting.
    2.  
       • X- Scion
       • Y-Root stock.
    3.  
       • Different compatible scions can be put on the same root stock.
       • Seedless crops can be propagated.
22.  
    1. Health record.
    2.  
       • When to carry out management practices e,g vaccinations.
       • when calling
       • Identify the most prevalent diseases,
       • Cost of treatment. 
       • When choosing breeding stock.
         
         Section c.
23.  
    1.  
       • shifting cultivation.
       • Accumulation of land holdings/buying and selling.
       • Traditional system inheritance.
       • Population pressure on limited area of land.
       • Traditionally land may be offered to settle debts.(5 marks)
    2.  
       • High amount of intense rainfall.
       • Steep slope
       • Loose soil type/ sandy soil.
       • Shallow depth.
       • Lack of vegetation.
       • Overstocking livestock.
       • Deforestation.
       • Clean weeding.
       • Ploughing up and down the slope.
       • Indiscriminate burning of vegetation.
       • Planting annual crops on steep slopes.
    3.  
       • Lopping
       • Pollarding.
       • Coppicing.
       • Thinning.
       • Pruning.
24.  
    1. 
       
       • Formulation
       • Time of application.
       • Selectivity.
       • Mode of action.
       • Environmental factors.
    2.  
       • Level of education and technology.
       • Health.
       • Government policy.
       • Economy.
       • Cultural and religious beliefs.
       • Transport and communication. 
       • Market forces.
25.  
    1.  
       • Diversification.
       • Selecting more certain enterprises.
       • Contracting.
       • Rationing input.
       • Modern production techniques.
       • Insurarance. 
    2.  
       • Relative humidity.
       • Light intensity.
       • Temperature.
       • Rooting medium.
       • Leaf surfac area