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Agricultural Science

Practice BookGrade 10

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Focus_Exam Practice Book_COVER_Agriculture Science_Gr10.indd 2 2011/10/06 12:02 PM

Grade 10 AGRICULTURAL SCIENCES

PRACTICE TEST ONE Marks: 80

QUESTION 1 Various possible answers are provided for each question. Write the letter only of the correct answer next to the corresponding number. 1.1 Overgrazing does not lead to …

A reduced cover B change of grass species C decreased erosion D increased run-off. (2)

1.2 A factor that does not influence climate is …

A rainfall B temperature C wind D soil water. (2)

1.3 True desert vegetation has the following characteristics:

A rainfall between 50 and 125mm per year B quiver trees C Karoo shrubs D All the above mentioned characteristics. (2)

1.4 Biomes in different parts of the world differ because …. differ.

A topography and soil B rainfall and climate C temperature and seasons D soil pH and soil texture (2)

1.5 An example of political reasons for land reform is …

A to get voter support from the rural poor B to provide for better ways of sharing land in a fair manner C to provide for penalising of ineffective or damaging farming methods D to provide for resettlement of communities by moving people from poorer areas to

more productive areas. (2) 1.6 The total percentage of arable land in South Africa is …

A 32% B 42% C 22% D 12%. (2)

Agricultural Sciences Tests.pdf 1 7/6/2011 5:10:53 PM

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1.7 The major employer in South Africa is …

A education B agriculture C medicine D economy. (2)

1.8 Laws to do with the environment are …

A The World Heritage Convention Act Of 2000 B The Restitution Of Land Rights Act Of 1994 C The Provision Of Land And Assistance Act Of 1993 D The Communal Land Rights Act Of 2004. (2)

1.9 Study the diagrams of symbiotic relationships and then answer the questions that

follow.

Diagram A Diagram B Diagram C

Which of the above diagrams indicate a relationship that has a negative influence on one of the species while the other benefits?

A Diagram A B Diagram B C Diagram C D Diagram B and C (2)

1.10 An area that contains certain types of plants which are suited to the climate of that area

is called ...

A exotic B xerophyte C biome D plantation. (2)

1.11 An example of a greenhouse gas is …

A oxygen B methane C nitrogen


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D carbon monoxide. (2) 1.12 The symbiotic relationship “commensalism” is defined as ...

A Only one species benefits, but it neither harms nor benefits the other species. B One organism benefits and gets nutrients from the other organism. C Both species benefit. D Two or more species need the same resources. (2)

[24] QUESTION 2 Write down the correct term or word for each of the following statements next to the corresponding number. 2.1 The part of the earth where life exists. (1)

2.2 The name given for an ecological region. (1)

2.3 Grasslands with scattered trees, usually thorn tree species (1)

2.4 Dense grassland in the high rainfall areas (750–1 000mm per annum). (1)

2.5 Farmers that move around according to the seasons. (1)

2.6 Things produced by agriculture which are used as raw materials in other industries. (1)

[6] QUESTION 3 3.1 Explain what the difference is between the following:

a) sour veld (2)

b) sweet veld. (2)

3.2 Name the TWO abiotic factors that influences the type of veld found in the different

ecological regions of South Africa. (2) [6] QUESTION 4 Study the distribution of rainfall in South Africa as shown on the map and the key that accompanies the map.


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4.1 Indicate the rainfall that is likely to occur in the regions labelled A to F. (Write the rainfall figures next to the appropriate LETTERS in your answer book). (6)

4.2 Identify the type of farming in the following regions:

a) region D (1) b) region B. (1)

4.3 In which region would you find (write the letter of the region only):

a) succulent plants (1) b) subtropical plants? (1)

[10] QUESTION 5 Study the water cycle illustrated below and then answer the questions that follow:

5.1 Provide labels for the parts labelled A to D. (4) 5.2 Explain how the water loss as indicated by A to D could be minimized. (4) 5.3 Why is the building of dams advantageous for agricultural production? (2) 5.4 What do we call the artificial application of water? (1) [11]


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QUESTION 6 Agriculture is one of the oldest human activities and has changed and developed from hunter-gatherers to modern intensive agriculture.

6.1 Name THREE systems of farming found in South Africa today. (3)

6.2 The San migrated to gather food. What sort of food did they eat traditionally? (2)

6.3 Suggest why the San people lost their habitat. (1)

6.4 Which Act did the government put in place to address the imbalances of land ownership of the past? (1)

6.5 Give TWO reasons for modern day migration, away from rural areas. (2)

6.6 The San’s indigenous knowledge is being used to produce a secondary industrial product. Name the type of product and its use. (2)

[11] QUESTION 7 Burning land is regulated by the Conservation of Agricultural Resources Act of 1983. This means that land owners may only burn veld after they have received written permission from the relevant authorities. The burning of veld is often done to prepare land for cultivation. 7.1 Why is it necessary to burn natural pastures? (2)

7.2 What influence do invaders such as Black Wattle have on the temperature of veld fires? (2)

7.3 When is the best time to set veld fires deliberately in the winter rainfall areas? Give reasons for your answer. (2)

7.4 How often is it necessary to burn veld in the fynbos regions? (2)

7.5 Name the two types of veld fires. (2)

7.6 Why is it necessary for farmers to set fires at specific time of the year? (2)

[12]

[TOTAL: 80 marks]


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Grade 10 AGRICULTURAL SCIENCES

PRACTICE TEST TWO Marks: 50

QUESTION 1 Various possible answers are provided for each question. Write the letter only of the correct answer next to the corresponding number. 1.1 The only type of soil water that is available to plants is …

A gravitational water B hygroscopic water C capillary water D swell water. (2)

1.2 ONE of the following is NOT a component of soil:

A water B air C living organisms D rock minerals (2)

1.3 The horizon normally found at the top of a soil profile that is rich in organic matter.

A R-horizon B A-horizon C B-horizon D D-horizon (2)

1.4 Which of the following adsorbs many plant nutrients?

A clay B gravel C loam soil D sandy soil (2)

1.5 The organic colloid …

A has a round shape B has a small specific area C cannot be destroyed D does not have a fixed shape. (2)

1.6 The type of water which moves in vapour form is …

A softening water B hygroscopic water C gravity water D capillary water. (2)


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1.7 Almost insoluble in water. Weathering decreases the size of the crystal. It forms the sand fraction of soil.

A feldspars B quartz C mica D apatite (2)

1.8 An agent for the biological weathering of rocks is …

A micro-organisms B water C temperature D ice. (2)

[16] QUESTION 2 Write down the correct term or word for each of the following statements next to the corresponding number. 2.1 The liquid substance that forms when the gases of the inner earth cools down. (1)

2.2 The biological process where organisms produce organic substances known as chelates. (1)

2.3 The rocks that are formed when igneous or sedimentary rocks are placed under high pressure and intense heat. (1)

2.4 This type of rock was formed when molten magma or lava cooled down and solidified or crystallised. (1)

2.5 The breaking down of organic matter by bacteria and fungi into humus. (1)

2.6 A term to describe the chemical, physical and biological characteristics of water. (1)

[6] QUESTION 3 For each of the following, write down only the LETTER of the statement from Column B which best suits the concept or idea in Column A next to the corresponding number.

COLUMN A COLUMN B

3.1 Unloading A A part of the earth where land rocks and soil are found.

3.2 Lithosphere B A solution that has a low pH.

3.3 Acid C Originates from limestone sediments.

3.4 Sandy soil D A reduction in pressure that leads to cracks forming in rocks.

3.5 Marble rock E The enrichment of water with the plant nutrients nitrate and phosphate.

3.6 Eutrophication F Loss of nutrients in the soil.

G Has been used for thousands of years to make glass.

H A solution that has a high pH.

[6]


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QUESTION 4 The USDA textural classification chart can be used to classify soil if information is available on what the soil specimen is composed of.

4.1 Classify the soil samples below by using the chart above.

a) 85% sand 15% clay 20% silt (1) b) 50% sand 50% clay 70% silt (1) c) 40% sand 80% clay 10% silt (1)

4.2 Name TWO restrictions of the soil type that you have classified in answer 4.1(b) (2) [5] QUESTION 5 In nature, soil forms in layers as seen in the picture below of a road cutting:

5.1 What do we call visible horizontal soil layers as seen in the picture? (2)


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5.2 Identify the layers that are numbered 1 to 4. (4) 5.3 Which layer contains large amounts of humus? (1) [7] QUESTION 6 A jar of garden soil was collected and filled with water. The jar was closed and given a good shake. It was left to stand for an hour. Study the results of the experiment that was done in class.

6.1 Which numbered part is an indication of the presence of clay? (1) 6.2 What fills the space shown as number 1? (1) 6.3 Where did the substance (6.2) come from? (1) 6.4 At which horizontal layer will number 2 be found? (2) 6.5 Explain what it means if we say that number 3 is a colloidal solution. (2) 6.6 How would you classify this soil sample – clay, sandy or loamy? Give a reason for your

answer that is visible in the diagram. (3) [10]

[TOTAL: 50 marks]


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Grade 10 AGRICULTURAL SCIENCES PRACTICE TEST THREE Marks: 80

QUESTION 1 1.1 Various possible answers are provided for each question. Write the letter only of the

correct answer next to the corresponding number. 1.1.1 Why is the development of new breeds and plant cultivars necessary?

A adaptation B higher production C better quality D All the above mentioned reasons. (2)

1.1.2 The largest of the dairy breeds is …

A Friesland B Jersey C Guernsey D Ayrshire. (2)

1.1.3 The following regions can be regarded as the home of the Angora:

A Cape Town, Caledon, Swellendam B Jansenville, Steytlerville, Willowmore C Bloemfontein, Trompsburg, Reddersburg D Gauteng, Pretoria, Kempton Park (2)

1.1.4 A cattle breed that originated in America is the …

A Brahman B Hereford C Afrikaner D Bonsmara. (2)

1.1.5 This is not a characteristic of Nguni cattle:

A high milk production B heat tolerance C light tolerance D resistance to ticks. (2)

1.1.6 When most of the palatable grasses are eaten by animals and less palatable grasses

are left in the veld, it is called:

A overstocking B continuous grazing C selective grazing D zero grazing. (2)


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1.1.7 Which one of the following breeds are not a ruminant?

A cows B goats C sheep D chickens (2)

1.1.8 An example of a water-borne disease is …

A diarrhoea B chicken pocks C measels D mumps (2)

[16]

TOTAL FOR QUESTION 1 - 16 marks QUESTION 2 2.1 Indicate which of the livestock in the block produce the following products:

Dorper Jersey Australop Dormer

Merino Drakensberger Angora Large White

Frieslander Simmentaler Leghorn Saanen

2.1.1 milk production (1)

2.1.2 wool production (1)

2.1.3 egg production (1)

2.1.4 mohair production (1) [4] 2.2 Grain products that are used to feed animals are expensive. Animals that are selected

for production purposes must have good characteristics to ensure maximum use of feed. You have been asked to explain to new farmers which SIX characteristics they must take into account when selecting good laying hens. [6]

2.3 Study the characteristics of different pig breeds and name the individual breed that it

describes. 2.3.1 white in colour; has a long body and upright ears (2) 2.3.2 forward floppy ears; pink skin and loose condition if they are not kept in comfortable

housing and given good food (2) 2.3.3 red in colour; very old breed; quite small and looks more like the original wild boar (2) 2.3.4 colour ranges from light to dark red with light shoulders (2) [8]


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2.4 Study the following production characteristics of sheep breeds.

A B

C D

2.4.1 Identify the individual breed for each specific characteristic:

a) dual-purpose breeds (1) b) pelt breeds (1) c) mutton breeds (1) d) wool breeds. (1)

2.4.2 Which breed was developed from a cross between the Black Faced Persian and the

Dorset Horn? (2)

2.4.3 Name TWO indigenous breeds of sheep. (2)

2.4.4 What is the goat breed called that produces mohair? (2)

[10]

TOTAL FOR QUESTION 2 - 28 marks QUESTION 3 3.1 Animals play an important role in the environment. Discuss FIVE ways in which animals

improve people’s lives. [10] 3.2 Study the characteristics of sheep breeds and identify the breed that each characteristic

is describing: 3.2.1 has a long, thick tail that stores fat to give energy in times of drought (2)

3.2.2 short wool with white body and black head; ideal in hot and dry conditions and often produce twins and lots of milk (2)

3.2.3 produces high quality wool and is also bred for its meat (2)

3.2.4 kept for the skins of lambs, which are killed at birth; thrives in very dry areas (2)

3.2.5 large breed with short wool that is mainly kept for their meat (2)

[10]


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3.3 Answer the question after studying the ecological map of South Africa.

Study the examples of animal breeds. Indicate which animal is best suited to the regions numbered A to F. Write the letter of the region next to the question number.

(i) (ii)

(iii) (iv)


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(v) (vi)

3.3.1 Animal (i) (1)

3.3.2 Animal (ii) (1)

3.3.3 Animal (iii) (1)

3.3.4 Animal (iv) (1)

3.3.5 Animal (v) (1)

3.3.6 Animal (vi) (1)

[6] 3.4 Study the pictures of different poultry breeds and answer the questions that follow.

Write the letter and the name next to the question number.

A B

C D

3.4.1 Identify and name the chicken that is a dual-purpose breed. (2) 3.4.2 Identify and name the broiler breed. (2) 3.4.3 Identify and name the egg-laying breeds. (2) 3.4.4 Identify and name the show breed. (2) 3.4.5 Name TWO other poultry breeds that are kept for meat and feather production. (2) [10]

[TOTAL: 80 marks]


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Grade 10 AGRICULTURAL SCIENCES - CLASS TEST Marks: 80 QUESTION 1 Various possible answers are provided for each question. Write the letter only of the correct answer next to the corresponding number. 1.1 An indigenous fruit crop is …

A green beans B plums C grapes D marula. (2)

1.2 Tobacco plants are indigenous to …

A North and South America B North and South Africa C India D the Mediterranean regions of Europe. (2)

1.3 The winter cereal that is used in beer as malt.

A wheat B barley C oats D rye (2)

1.4 An example of a subtropical fruit.

A apples B oranges C tomatoes D bananas (2)

1.5 Horticultural crops include the following, except …

A flowers B wheat C vegetables D fruit. (2)

1.6 One of the following examples is not a legume.

A lupines B soya beans C sweet corn D sweet clover (2)

1.7 The following are all uses of rye, except ...

A production of whiskey B production of cooking oil C production of flour for bread D feed for livestock. (2)


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1.8 The legume crop that is used as pasture and also serves as a good honey crop for

bees.

A ground nuts B lucerne C green beans D clover (2)

1.9 These are the most important kinds of wheat, except …

A club wheat B durum wheat C bread wheat D sweet wheat. (2)

[18] QUESTION 2 2.1 Explain the meaning of the word “horticulture”. (1) 2.2 In which biome are most of the indigenous flowers that are exported out of South Africa

found? (2) [3] QUESTION 3 The ecological map of South Africa shows regions that are ideal for cultivating specific crops. Study these carefully before answering the questions that follow.

Identify the region that is ideal for the cultivation of … 3.1 grapes (1) 3.2 bananas (1) 3.3 sugar cane (1) 3.4 maize (1) 3.5 proteas (1) [5]


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QUESTION 4 Commercial forestry plays an important role in the economy of South Africa. Irrigation is never used in forestry plantations. In South Africa forestry is practiced in the “timber belt” areas. 4.1 Where do we find the majority of South Africa’s forests? (2) 4.2 What is the reason for their cultivation being area specific? (2) 4.3 Why do we talk about the “timber belt” areas? (1) [5] QUESTION 5 Study the data below and answer questions that follow:

The value of crop and animal production

In agriculture, the production of crops and other food stuffs, not only has an economical advantage, but also a nutritional value.

Hunger and disease Sadly, many people in the world do not eat balanced meals. Others do not have enough to eat and starve to death or die of illnesses such as kwashiorkor (caused by not getting enough protein to eat). It is a West African word that means “the sickness that a child develops when another child is born”. The newborn child no longer receives protein-rich breast milk. Food programs for starving children often include peanut butter and milk powder, because these are protein-rich foods. Growing children need more protein than adults.


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5.1 How can sustainable farming help poor communities to improve their health and living standards? (2)

5.2 Name ONE food that is a good source of protein. (1)

5.3 Butter and fish contain a lot of …. (1)

5.4 A lack of which organic compound causes the disease kwashiorkor in children from poor socio-economic environments? (1)

5.5 Starchy food is regarded as the staple food in the daily diet of different cultures. Name a starchy food that is largely the staple food of one cultural group in South Africa. (1)

5.6 Name an agricultural product found in the pyramid that is rich in:

a) carbohydrates (1)

b) fats (1)

c) proteins (1)

5.7 Name any feeding program/scheme that you know of. (1)

[10] QUESTION 6 Study the graph below showing wheat production between 2005 and 2008.

6.1 In which year was the least wheat produced? (1)

6.2 What was the difference in wheat production between the highest and lowest production? Show all your calculations. (3)

6.3 How many tonnes of wheat were produced in 2008? (2)

6.4 Which climatic condition had an influence on the wheat production in 2008? (2)

6.5 Suggest ONE reason why the production was so low in 2005. (2)

[10]


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QUESTION 7 Read the following passage and then answer the questions below.

South Africa is rich in indigenous plants. Many of these plants have traditional medicinal value and can also be used to treat livestock. Sustainable farmers make use of these plants as remedies to treat animals, because they are cheap and easy to collect. Unfortunately, many of these plants can become extinct if they are not used in a sustainable manner. With an increase in demand for these indigenous plants, protective measures must be put in place. The legume-forming herb called Sutherlandia frutescens (cancer bush) is also becoming well knows as the “Aids bush”. This bush was used historically by the Nama and Khoi to make creams from powdered pastes to heal infections. It has been used to treat cancer for hundreds of years, and is administered by drawing a tea extract from the leaves. With recent advances in technology, the powdered leaves are now sold in chemists in pill form.

7.1 List FOUR different forms in which the cancer bush can be used. (4)

7.2 Name the regions where this plant grows naturally according to the information given. (2)

7.3 What common vegetable is family of this plant? (2)

7.4 Why has it become known as the “Aids bush” in recent times? (2)

7.5 Do you think that this bush has a marketing value? Give a reason for your answer. (2)

[12] QUESTION 8 Study the table that illustrates the chemical composition of oat, cow pea and lucerne hay.

Type of plant Percentage

Protein Fat Fibre Calcium Carbohydrates

Oat hay 3,4 4,0 31,0 0,20 52,0

Cow pea hay 10,5 2,2 27,8 1,40 11,0

Lucerne hay 12,5 2,0 35,1 1,10 37,0

8.1 The plants in the table are examples of a group of field crops. Which group do they belong to? (2)

8.2 According to this table, oat hay and lucerne hay can be classified as crops that are rich in a certain organic compound. Name this nutrient. (1)

8.3 Calculate the difference in protein content between plants with the highest and lowest protein values. Show calculations. (3)

8.4 Explain why we feed animals the above mentioned hays. (2) 8.5 Grain crops originated a thousand years ago. What type of wild plant do these crops

originate from? (1) 8.6 Draw a bar graph to compare the fat and fibre content of oat hay and lucerne hay. (7) 8.7 What do you conclude from the information illustrated in your graph about the

relationship between the fat and fibre content of these two crops? (1) [17]

[TOTAL: 80 marks]


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Grade 10 AGRICULTURAL SCIENCES PRACTICE TEST ONE MEMORANDUM

QUESTION 1 1.1 C (2)

1.2 D (2)

1.3 B (2)

1.4 B (2)

1.5 A (2)

1.6 D (2)

1.7 B (2)

1.8 A (2)

1.9 A (2)

1.10 C (2)

1.11 B (2)

1.12 A (2)

[24] QUESTION 2 2.1 Biosphere (1)

2.2 Biome (1)

2.3 Savannah (1)

2.4 Sour veld (1)

2.5 Nomads (1)

2.6 Agricultural commodities (1)

[6] QUESTION 3 3.1 a) Palatable / edible and nutritional for animals when the plants are young.

As the plant matures the nutritional value and palatability decreases quickly. (2) b) Palatable and nutritious grasses even when mature. (2)

3.2 Average rainfall during the growing season

Soil type (2)

[6] QUESTION 4 4.1 A: < 200 mm

B: 201 – 400 mm


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C: 401 – 600 mm D: 601 – 800 mm E: 801 – 1 000 mm F: > 1 000 mm (6)

4.2 a) Cattle farming (1)

b) Merino farming (1)

4.3 a) A (1)

b) F (1)

[10] QUESTION 5 5.1 A: Transpiration (1)

B: Evaporation (1)

C: Runoff (1)

D: Infiltration (1)

5.2 A: Cultivate smaller leaved plants, shorter growth period, remove weeds, apply nitrogen with caution.

B: Ground cover, mulching, keep soil under vegetation.

C: Making contours, terraces, irrigate with caution, keep soil under vegetation.

D: Adding organic material e.g. compost / humus that improves water absorption and retention, keep soil under vegetation. (4)

5.3 Any two of the following:

• Minimize runoff to sea / lakes ()

• Provide water for irrigation ()

• Generate electricity () (2)

5.4 Irrigation (1)

[11] QUESTION 6 6.1 • Subsistence farming (1)

• Commercial farming (1)

• Cash crop farming (1)

6.2 Hunted meat () / game ()

Veld plants () / roots () / berries () (2)


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6.3 They were forced to live on land allocated to them by the government of the time. (1)

6.4 Land Redistribution Act (1)


• Low salaries / poverty ()

• Long working hours on farms and hard labour ()

• Mechanisation () (2)

6.6 Drug used for dieting purposes (2) [11]

QUESTION 7 7.1 To stimulate the growth of pastures in the growing season. (2)

7.2 Increases temperature which leads to deeper burning (to root level) and destruction of seeds. (2)

7.3 In the winter months when the rainfall is higher and temperatures are lower. (2)

7.4 Every four years. (2)

7.5 Crown and surface fires. (2)

7.6 To prevent bush invasion and to stimulate the germination and growth of palatable grasses. (2)

[12]

[TOTAL: 80 marks]


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Grade 10 AGRICULTURAL SCIENCES PRACTICE TEST TWO MEMORANDUM

QUESTION 1 1.1 C (2)

1.2 C (2)

1.3 B (2)

1.4 A (2)

1.5 D (2)

1.6 B (2)

1.7 B (2)

1.8 A (2)

[16] QUESTION 2 2.1 Magma (1)

2.2 Chelation (1)

2.3 Metamorphic (1)

2.4 Igneous (1)

2.5 Decomposition (1)

2.6 Water quality (1)

[6] QUESTION 3 3.1 D (1)

3.2 A (1)

3.3 B (1)

3.4 C (1)

3.5 G (1)

3.6 E (1)

[6]


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QUESTION 4 4.1 a) Sandy loam soil (1)

b) Clay loam (1)

c) Clay (1)


• Poor aeration ()

• Poor drainage ()

• Poor root penetration ()

• Crust forming ()

• Slow uptake of water () (2)

[5] QUESTION 5 5.1 Soil profile (2)

5.2 1 – O horizon

2 – A horizon

3 – B horizon

4 – C horizon (4)

5.3 A horizon (1)

[7] QUESTION 6 6.1 5 (1)

6.2 Air (1)

6.3 Air spaces (pores) between soil particles (1)

6.4 A Horizon (2)

6.5 Very small particles that are suspended in water (2)

6.6 Sandy

More larger soil particles than clay and silt (3) [10]

[TOTAL: 50 marks]


25

Grade 10 AGRICULTURAL SCIENCES PRACTICE TEST THREE MEMORANDUM

QUESTION 1 1.1.1 D (2)

1.1.2 A (2)

1.1.3 B (2)

1.1.4 A (2)

1.1.5 A (2)

1.1.6 C (2)

1.1.7 D (2)

1.1.8 A (2) [16]

TOTAL FOR QUESTION 1 - 16 marks

QUESTION 2 2.1.1 Jersey (1)

2.1.2 Merino (1)

2.1.3 Leghorn (1)

2.1.4 Angora (1)

[4] 2.2 Any six of the following:

• Eyes alert and awake ()

• Comb and lobes should have a healthy appearance ()

• Chest should be round and not fleshy ()

• Pelvic cavity should be wide to allow easy passage of eggs ()

• Legs should be strong ()

• Body size should not be too big ()

• General appearance should be of a well-kept and healthy chicken () [6] 2.3.1 Large White (2)

2.3.2 Landrace (2)

2.3.3 Tamworth (2)

2.3.4 Minnesota (2)

[8] 2.4.1 a) Dormer (1)

b) Karakul (1)

c) Dorper (1)


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d) Merino (1)

2.4.2 Dorper (2)

2.4.3 Persian and Round-ribbed Afrikaner (2)

2.4.4 Angora (2)

[10] TOTAL FOR QUESTION 2 - 28 marks

QUESTION 3 3.1 Any five of the following:

• Provides food ()

• Provides clothing ()

• Boosts economy through exports ()

• Cultural purposes such as ceremonies for initiations / lobola ()

• Draught power ()

• Sport and recreation ()

• Animal feed ()

• Aesthetic value such as ostrich feathers or porcupine quills () [10]

3.2.1 Ronderib Afrikaner (2)

3.2.2 Dorper (2)

3.2.3 Merino (2)

3.2.4 Karakoel (2)

3.2.5 Letelle (2) [10] 3.3.1 D (1)

3.3.2 F (1)

3.3.3 A (1)

3.3.4 E (1)

3.3.5 B (1)

3.3.6 C (1)

[6]

3.4.1 B – Australop (2)

3.4.2 D – Naked Neck (2)

3.4.3 A – New Hampshire (2)

3.4.4 C – Bantam (2)

3.4.5 Duck and Geese (2) [10]

[TOTAL: 80 marks]


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Grade 10 AGRICULTURAL SCIENCES Class Test - Suggested Solution

QUESTION 1 1.1 D (2)

1.2 A (2)

1.3 B (2)

1.4 D (2)

1.5 B (2)

1.6 C (2)

1.7 B (2)

1.8 B (2)

1.9 D (2)

[18] QUESTION 2 2.1 The science of cultivating vegetables, fruit and flowers. (1)

2.2 Fynbos (2)

[3]

QUESTION 3 3.1 E (1)

3.2 D (1)

3.3 B (1)

3.4 A (1)

3.5 F (1)

[5]

QUESTION 4 4.1 Sub tropical and tropical regions (2)

4.2 These regions have a high rainfall and therefore there is no need to irrigate (2)

4.3 Trees cultivated are used to produce timber. (1)

[5]


28

QUESTION 5 5.1 Enough food and variety of food types to ensure balanced meals are provided for the

whole family . (2)

5.2 Any one of the following:

• Milk / cheese / yoghurt / any dairy product ()

• Meat / fish ()

• Beans ()

• Eggs () (1)

5.3 Fat (1)

5.4 Proteins (1)

5.5 Indigenous cultural groups such as Zulu’s, Sotho’s or Xhosa’s () – Maize meal ()

OR European descendent () – Potatoes / wheat (bread) () (2)

5.6 a) Wheat / potatoes / maize (1)

b) Sunflower / animal fats such as drippings from pigs or dairy (butter from milk) (1)

c) Meat from animals: cow, chicken, fish / dairy products such as milk (1)

5.7 Bread with peanut milk, beans, butter and jam given at schools. (1)

[10]

QUESTION 6 6.1 2005 (1)

6.2 16 000 – 6 000 = 10 000 tonnes (3)

6.3 16 000 tonnes (2)

6.4 Good rainfall in the growing season. (2)

6.5 Any one of the following:

• No rain during the growing season ()

• Received frost during flowering period () (2) [10]


29

QUESTION 7 7.1 • Tea extract

• Creams

• Pill form

• Powder form (4)

7.2 Nama-Karoo and Succulent Karoo (2)

7.3 Legume such as peas or beans (2)

7.4 Has been used to treat aids patients. (2)

7.5 Yes () – With acceptable reason such as: Has great medicinal value () OR No () – With acceptable reason such as: Proof that it really has medicinal value must still be researched () (2)

[12]

QUESTION 8 8.1 Fodder crops (2)

8.2 Carbohydrate (1)

8.3 12,5% – 3,4% = 9,1% (3)

8.4 Protein is fed for production, growth and replacement of tissue

Carbohydrates are fed for energy (2)

8.5 Wild grass (1)

8.6 Bar graph:


30

Marks for bar graph:

• y-axis: labelling percentage content

• x-axis: labelling the bars / giving a key: oats and Lucerne

• Bars correctly drawn: three to four () / two to one ()

• Labelling of bars in groups: fat content and fibre content: both () / only one ()

• Heading for graph: Comparison of fat and fibre content of oat hay and lucerne hay. (7)

8.7 The higher the fibre content, the lower the fat content. (1)

[17]

[TOTAL: 80 marks]


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First published in 2011

ISBN 978-0-636-13054-8

Exam Practice Book_COVER_Agriculture Science_Gr10.indd 1 2011/06/27 12:09 PM

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