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Agriculture 1 • Form 4 • 2025

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Agriculture 1
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For each of the items (i) - (x), choose the correct answer from the given alternatives and write its letter beside the item number in the answer booklet provided.

i.

The laboratory investigation done on round potatoes wounds indicated that, tubers produced white juice upon squeezing. Which type of a disease would you conclude that has been affecting the plants?

A. Late blight
B. Early blight
C. Bacterial wilt
D. Mosaic
E. Viral disease

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ii.

In Tanzania, land tenure can be grouped into different categories. Which one can be given to an individual, a married couple or a group of people?

A. Communal
B. Open access
C. State owned
D. Private
E. Government

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iii.

On deciding what to produce, a farm manager has to consider the relationship among products. What kind of product relationship does the following figure illustrate?

A. Joint products
B. Complementary products
C. Supplementary products
D. Competitive products
E. Mutually exclusive products

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iv.

Which set represents the crops grown for the production of aromatic substances for food flavouring?

A. (i), (ii) and (v)
B. (ii) and (iv)
C. (i), (iii) and (v)
D. (iii) and (iv)
E. (i), (ii) and (iii)

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v.

Soil profile is made up of different horizons. Which one contains very little soil that lacks structure?

A. Horizon "O"
B. Horizon "A"
C. Horizon "B"
D. Horizon "C"
E. Horizon "R"

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vi.

In early and modern times, agriculture has been considered important. Which one among the following serves in both times?

A. Basis for research
B. Source of income
C. Creating employment
D. Source of foreign exchange
E. Source of food

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vii.

In areas where coffee is grown, farmers are advised to have tools for removing excessive branches which are less or not productive. Which tools would you advise farmers to possess in order to perform the task?

A. Shears
B. Secateurs
C. Sickles
D. Forks
E. Slashers

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viii.

Moisture is an important requirement for plant growth. At what stage of growth in maize plants it is critically needed?

A. Silking and tasseling
B. Root enlargement
C. Flowering and panicle initiation
D. Vegetative growth
E. Crown root initiation

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ix.

During dry seasons, cattle suffer from shortage of feeds. Which forms of feed conservation would you advise the farmers to practice to address the problem?

A. (i) and (iii)
B. (ii) and (iv)
C. (i) and (v)
D. (ii) and (iii)
E. (iv) and (v)

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x.

Why is phosphorus essential for plant growth and development?

A. Promotes the formation of roots
B. Promotes the formation of chlorophyll
C. Is essential for normal cell division
D. Regulates the uptake of potassium by plants
E. Acts as a detoxifying agent

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