JUNIOR SECONDARY SEMI-EXTERNAL EXAMINATION

Name............................................. School .................................... Grade 9 .....

JUNIOR SECONDARY SEMI-EXTERNAL EXAMINATION

AGRICULTURAL SCIENCE

WRITTEN PAPER Marks 130

Additional Materials: Multiple-choice answer sheet Non-programmable calculator Soft clean eraser Soft pencil (type B or HB)

2 hours 15 minutes Specimen

INSTRUCTIONS AND INFORMATION TO CANDIDATES SECTION A

Make sure that you receive the multiple-choice answer sheet to answer Section A.

There are thirty questions. Answer all questions.

SECTION B ? Write your Candidate Name in the spaces at the top of this page. ? Write your answers on the Question Paper in the spaces provided. ? Answer all questions. ? Write in dark blue or black pen. ? Use a pencil for diagrams, graphs or rough working. ? Do not use correction fluid.

? The number of marks is given in brackets [ ] at the end of each

question or part question.

For Examiner's Use

Section A Section B Total

This document consists of 25 printed pages and 1 blank page.

REPUBLIC OF NAMIBIA

MINISTRY OF EDUCATION, ARTS AND CULTURE

?MoEAC/NIED

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SECTION A Answer all the questions. For each question there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the

multiple choice answer sheet. If you want to change an answer, thoroughly erase the one you wish to delete.

1

Which is a contribution of agriculture to the family?

A food B foreign currency C job opportunities D water

2

What is the amount of water vapour in the atmosphere around us called?

A evaporation B humidity C rainfall D temperature

3

The graph shows population growth in relation with food production.

What conclusion can you make from the graph?

A Food production decreases and population decreases. B Food production decreases and population increases. C Food production increases and population decreases. D Food production increases and population increases.

4

What advantage does rainfall have for crop growth?

A encourages fungal diseases B encourages seed formation C improves crop yield D improves flower formation

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5

Which organism destroys the crops on the field and during the storage?

A bacteria B fungi C protozoa D virus

6

The diagram shows the label from a bag of fertiliser.

Which nutrient is represented by the number 7 in the ratio?

A calcium B nitrogen C phosphorus D potassium

7

The diagram shows a soil profile.

Which layer contains high humus content?

8

Which is a reason for choosing a crop cultivar to plant?

A to increase crop maturity B to reduce the quality of crops C to obtain disease resistance D to obtain low crop yield

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9

The picture shows a volcano erupting.

Which type of rock is formed once the magma cools down? A alfa rock B igneous rock C metamorphic rock D sedimentary roc

10 Which of the agents cause physical weathering? A plants and microorganisms B plants and temperature change C water and microorganisms D water and temperature change

11 A sample of soil was found to have the following characteristics: (i) small particles (ii) hard when dry (iii) holds a lot of water

Which soil is described above? A clay B loam C sand D silt 12 The diagram shows a plant. Which structure is responsible for the absorption of water?

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13 Why is it important to prepare the soil before planting?

A to compact the soil B to improve drainage C to increase soil pH D to prevent weed growth

14 Why is record keeping important in crop production?

A to avoid future mistakes B to enable faster profit C to make more money D to reduce loss

15 Which salt water fish is found in Namibia?

A bream B carp C snoek D trout

16 The picture shows a fish harvesting method used in Namibia.

Which harvesting method is shown in the picture?

A basket trap B fishing net C hook and line D sword fishing

17 Which term refers to the first milk produced by a cow after birth?

A colostrum B condensed C fresh D ideal

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