EXAMINATION NUMBER______________________________
THE MALAWI NATIONAL EXAMINATIONS BOARD
2021 MALAWI SCHOOL CERTIFICATE OF EDUCATION EXAMINATION
AGRICULTURE
Subject Number: M012/1
Time Allowed: 2 hours
(8.00-10.00am)
PAPER 1
(100 Marks)
(Theory)
Instructions: Question Tick if Do not
1. This paper contains 14 pages. Please check. Number Answered write in
2. Answer all ten questions in section A and all these
three questions in section B. margins
3. The maximum number of marks for each answer 1
is indicated against each question. 2
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4. Answer all questions in the spaces provided.
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5. Write your name and class on top of every page.
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6. In the table provided on this page, tick against the
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question number you have answered.
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7. Hand in your paper to the invigilator at the end.
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@2021 MANEB TURN OVER
EXAMINATION NUMBER:_______________________________
Section A (70 marks)
Answer all the ten questions in this section
1. a. State any two bad farming practices that cause soil degradation.
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(2 marks)
b. Explain any two effects of soil degradation on land resources.
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(4 marks)
c. Describe one way how biological conservation measures help to control soil degradation.
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(2 marks)
2. a. State three conditions a plant nutrient must satisfy to qualify as an essential plant nutrient.
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(3 marks)
EXAMINATION NUMBER:_______________________________
b. In what form is nitrogen absorbed by plants?
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(1 mark)
c. What mineral element lacks for a plant to show mottled interveinal chlorosis of young
leaves?
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(1 mark)
3. Figure below shows production of hybrid maize. Use the key to answer some of the
questions.
a. What do arrows in the diagram indicate?
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(1 mark)
b. Explain why one plant was de-tasseled and one had its cob covered in each set?
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(2 marks)
EXAMINATION NUMBER:_______________________________
c. Name any one Centre in Malawi where such experiments are done.
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(1 mark)
d. Give one example of a double crossed hybrid maize variety in Malawi.
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(1 mark)
4. a. Explain any one main difference between risks and uncertainties.
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(2 marks)
b. Classify the following into risks and uncertainties: price fluctuations, weather changes, fire
and theft.
Risks Uncertainties
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(4 marks)
c. State any two ways in which farmers can adjust to risks and uncertainties.
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(2 marks)
EXAMINATION NUMBER:_______________________________
5. a. Calculate the purity percentage for Rhodes grass given the following information:
Seed size =200, 000 seeds/kg
Germination % =40%
Expected plant population =800, 000 plants
Seed rate =10.5kg/ha
(3 marks)
EXAMINATION NUMBER:_______________________________
b. Discuss three methods of treating pasture seeds.
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(6 marks)
6. A farmer observed the following signs of a disease in his herd of animals:
Abortion
Yellowish brown discharge from vulva
Use this information to answer the questions that follow.
a. Name the disease.
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(1 mark)
b. State any two farm animals that can be attacked by this disease.
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(2 marks)
c. State any two ways of preventing the disease.
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(2 marks)
EXAMINATION NUMBER:_______________________________
7. a. A farmer has poultry and vegetable enterprises on the same farm. Identify the type of
enterprise being practiced.
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(1 marks)
b. Explain any two ways how the two enterprises can reduce cost of production.
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(4 marks)
8. Figure below is showing an irrigation system. Use it to answer the question below.
a. Identify the irrigation system
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(1 mark)
b State any two factors to consider when establishing an irrigation system.
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(2 marks)
EXAMINATION NUMBER:_______________________________
c. Table 1 below shows yields of an experiment on maize. Use it to answer questions that
follow:
November December January February
Planting time
Block 1 yield (kg) 87 49 40 19
Block 2 yield (kg) 91 63 19 19
i. Calculate range in Block 1.
(1 mark)
ii. State the aim of the experiment.
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(1 mark)
iii. What factor was varied in the experiment?
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(1 mark)
iv. What conclusion can be drawn from the results of this experiment?
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(1 mark)
EXAMINATION NUMBER:_______________________________
v. State two methods used for data collection when conducting an agricultural
experiment.
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(2 marks)
9. a. Define the term Cooperative.
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(1mark)
b. List two challenges associated with the running of an agricultural cooperative.
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(2 marks)
c. Describe the principle of “open membership” for agricultural cooperative formation.
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(2 marks)
10. a. Define the term gender bias in agriculture.
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(1 mark)
b Explain any one way of increasing women’s involvement in decision making in
agriculture.
EXAMINATION NUMBER:_______________________________
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(2 marks)
11. The figure below is a mushroom. Use it to answer questions below.
a. Identify part labeled A. ____________________________________________________
B. _____________________________________________________
C. _____________________________________________________
(3marks)
b. Give two types of mushroom mostly cultivated in Malawi.
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(2 marks)
c. Explain one way of processing mushroom in order to increase shelf life.
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(2 marks)
EXAMINATION NUMBER:_______________________________
Section B (30 marks)
Answer all the three questions in an essay form except for question 11.
12. Explain any five scientific technologies that can ensure food security.
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(10 Marks)
EXAMINATION NUMBER:_______________________________
13. With a well labeled diagram describe how layering is done as a means of propagating plants.
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(10 marks)
EXAMINATION NUMBER:_______________________________
14. Discuss five problems associated with agricultural marketing.
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(10 marks)
END OF QUESTION PAPER
NB: this paper contains 13 pages
