Agricultural Sciences Paper 1 (English)

November 2017 — Grade 12 / Matric — Agricultural Sciences

Past Paper 2017 Grade 12 English Agricultural Sciences Hub →

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🎯 150 marks 📄 17 pages 📝 115 items found 📚 2 topics 🔑 1 key info

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Q1— Section header —

1.1Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A D\ next to the question ber (1.1.1

1.1.10\ in the ANSWER BOOK, for example 1.1.11 D.

1.1.1ONE of the following is a function of protein in farm animal egulation of body temperature Production of fat

1.1.2utrien used by farm animals for the insulation of body heat Minerals Vitamins Protein Lipids

1.1.3combination is an example of the most important feeds roduction ration: (i\ Maize, lucerne hay and groundnut oil

1.1.4Essential amino acids cann ot be produced by ruminants. can be produced by non ruminants. can be produced by pigs. cannot be produced by pigs and fowls.

1.1.5hich ONE of t he following statements is NOT correct wit h regard to increased production in an intensive unit

1.1Some of t igns below may indicate stress farm animals (i\

1.1.7Which following are examples ontagious bacterial diseases Redwater and mastitis Anthrax and tuberculosis

1.1ONE of the following is NOT a ne rvous symptom caused by plant poisoning Stargazing Restlessness Muscle con tractions

1.1.9The scrotum encloses the primary male reproductive organ that produces the spermatozoa and testosteron roduces the carrier fluid for spermatozoa. is the largest reproductive organ secretes all the reproductive

1.1.10

1.2Indicate whether each of the descriptions in COLUMN B applies to A ONLY B ONLY BOTH A AND B or NONE of the items

1.2.5\ in the ANSWER BOOK, for example 1.2.6 B only. COLUMN A COLUMN B

1.2.1Vitamin E The vitamin responsible for blood clotting in fowls Vitamin D

1.2.2Looks at the owest cost o feeding Feed flow programme for a group of farm

1.2.3Less protective their lambs Animal behaviour applicable to younger ewes lambing for the first time More p rotective of their lambs

1.2.4Halter The most appropriate tool to handle pigs Plywood board

1.2.5Endoderm The development of the respiratory and digestive system during the embryonic stage Ectoderm (5 x 2\ (10\

1.3Give ONE term for each of the following descriptions. Write only the term next to the question number (1.3.1

1.3.5\ in the ANSWER BO OK.

1.3.1The process of improving the digestibility of grain by dry heating causing them to expand

1.3.2When a farm animal maintain constant body temperature

1.3.3The phenomenon where a superior cow is treated with hormones to prod uce many ova

1.3.4The substance used to control the pH in the dilution semen

1.3.5The hormone responsible for the delayed secretion of FSH and oestrogen (5 x 2\ (10\

1.4Change the UNDERLINED WORD each the following atements to

1.4.5in the ANSWER BOOK.

1.4.1yloric sphincter is a ring of smooth muscle that controls th movement of food to the stomach.

1.4.2tick is an example of a one host tick that transmit redwater and anaplasmosis

1.4.3The condition where the reproductive organ in a female farm animal is underdevelop is known as hymen

1.4.4Water br eak s during parturition due to the r pture of the allantois membrane.

1.4.5The istolette is minute poly vinyl piece of equipment in which

Q2— Section header —

2.1The diagram below show s a section of the alimentary canal of a farm animal.

2.1.1Indicate whether the farm animal in the d iagram above is a ruminant or a non ruminant. (1\

Q2— Section header —

2.1.3State TWO functions of the digestive juice in (2\

2.1.4Name a fat digesting enzyme in the digestive juice secreted by (1\

2.2Below is a schematic representation of feed types used in the feeding of farm animals. FEED TYPES

2.2.1Classify feed types and (2\

2.2.2Identify the subdivision of feed type (1\

2.2.3Give TWO examples of the subdivision of feed type (2\

2.2.4Feed type mainly fed to ruminant animals Give TWO reasons to j usti fy this statement. (2\

2.3The table below shows the nutritional composition of two feeds. COMPONENT FEED A FEED B Digestible fat Digestible carbohydrates Digestible protein Nutritive atio

2.3.1Ide ntify the feed \ that is the most suitable for growing young farm animals.

2.3.2Give a reason for the answer

Q2— Section header —

2.3Calculate the percentage of digestible non nitrogen nutrients feed (2\

2.4ay w as fed to farm animals n a feed trial . After a week the results of the digestible coefficiency was 45%

2.4.1Comment with a reason on the suitability of this hay for feeding high producing milk cows. (2\

2.4.2Suggest TWO measures the farmer can take to increase the digestibility of this hay. (2\

2.5A dairy farmer is keeping 100 cows a pasture that supplies a total 450 000 kg dry matter during the rainy season and 216 000

2.5.1Refer to the scenario above and i dentify TWO problem s that the far mer might encounter

2.5.2Suggest ONE precautionary measure that the farmer needs to take to prevent the problem. (1\

2.5Calculate in tons the amount of feed required by the cows per month. Show ALL calculations.

2.6Animal feeds contain different nutrients such as carbohydrates, proteins and fats with different energy levels. It is important that the animals get the correct amount of each nutrient to fulfil their nutritional requirements.

2.6.1Refer to the passage above and iden tify the feed nutrient that provide the most energy to farm animals.

2.6.2Indicate the unit in which the total energy of an animal is measured. (1\

2.6.3It is important that the farmer calculate the energy value of the feeds. Give TWO reasons to support this statement.

2.7The table below shows minerals and vitamins and their deficiency symptoms. MINERAL /VITAMIN DEFICIENCY SYMPTOM Rough, thick skin and hair loss especially in pigs Selenium eficiency in pregnant cows Vitamin E

2.7.1Refer to the table above and write down the missing information

2.7.2Identify the method of supplementing EACH of the following: (a\ (b\ Vitamin A Soluble minerals [35]35

3.1The pie chart below show s the number and type of farm animals including the size of the area where they are kept

3.1.1Refer to the pie chart above and identify the farm animal s that are

3.1.2Give a reason for the answer

Q3— Section header —

3.1.3Refer to the pie chart above and identify the farm animal that use EACH of the following facilities: (a\ (b\ (c\ Laying b

3.1.4Calculate the percentage (%\ of sheep from the total number of farm animals on this fa Poultry Sheep

3.2The table below shows diseases that affect farm animals and the role of the state in controlling the spread of diseases. DISEASE AGENT OF TRANSMISSION KEY IDENTIFIABLE SYMPTOM PREVENTION

3.2Refer to the table above and identify (5\

3.2Refer to the table above and id entify the role the s tate in controlling the spread of diseases. (1\

3.2Suggest TWO duties of stock owners to prevent the spread of deadly diseases such as the one (2\ Which measures have been introduce by

3.3To ensure that m eat is not contaminated during the slaughtering process (1\

3.3To p revent the introduction of disease from other countries (1\

3.3To p revent the outbreak and further spread of a notifiable disease (1\ 12

3.4.1Deduce from the graph the range of days it took the lambs to gain 1,8

3.4Tabulate the data prese nted in the graph above. (6\

3.5Name the structure, apparatus or appliance used in EACH of the following situations to manage farm animals

3.5.1A permanen t structure next to a provincial road to restrain farm animals (1\

3.5.2pplianc e used to restrict the movement of a farm animal (1\

3.5.3Apparatus used to castrate young rams (1\

3.5.4The structure used to protect sheep and cattle against adverse weather conditions (1\

3.4

3.6The picture below represents the life cy cle of a microscopic external parasite that found mainly in sheep.

3.6.1Identify the external parasite in the life cycle above

3.6.2Give the term used to describe the symptom of a seve re infestation by this parasite in sheep

3.6.3Indicate a

Q3— Section header —

3.6.4State economic implications of th parasite [35] egg larva adult nymph stage 135

Q4— Section header —

4.1The picture below repres ents a process that takes place in cows.

4.1.1Identify the process in the picture above. (1\

4.1.2Identify THREE visible stimuli the picture above that activate the process in QUESTIO N 4.1.1 (3\

4.1.3Name the hormone responsible for the contractions of the glandular avity the process above. (1\

4.1.4Name the reproductive process which lasts 282 days in cattle and which precedes the process shown above.

4.2In female animals, hormonal and reproductive changes occur from one heat period to the next. This occurs in stages which are marked by distinctive characteristics. Below are the characteristics applicable to each stage

4.2.1Match characteristics with the stages of the oestrus cycle. (4\

4.2.2Write down the letter that represent the stage where EACH of the following occurs: (a\ (b\ Graafian follicle ruptures to release the ovum

4.3The diagram below shows a process generally used in the reproducti on of farm animals.

4.3.1Identify the process illustrated in the diagram above. (1\

4.3.2Identify in the diagram above.

4.3.3Name the TWO different types of process in the diagram ab ove. (2\

4.4The diagrams below show different apparatus that are used in th e process of artificial i nsemination (AI\.

4.4.1Identify apparatus and above.

4.4.2State the main function of apparatus and

4.4.3Name TWO basic requirement for the collection of semen from bulls. (2\ Somatic cell ater outer casing

4.5The representation below shows process used in female farm animals

4.5.1Identify the process above.

4.5.2State TWO disadvantages of the proc

Q4— Section header —

4.5.3Name TWO other techniques not mentioned in the schedule above that can also be used in female animals. (2\

4.5Assuming that the above mentioned schedul properly followed identify the day on which the c ows will be inseminated.

4.6Name THREE causes of the lack of libido in male farm animals. (3\ [35] TOTAL SECTION B: GRAND TOTAL:35

Topics Identified

Animal ProductionAgricultural Management

Mark Allocation

Total450 marks

Sections35 + 35 + 35 = 105 marks

Key Information

Contact Number0187653100

Paper information

SubjectAgricultural Sciences

Year2017

SessionNovember

TypePast Paper

PaperPaper 1

LanguageEnglish

Pages17

Downloads6

Examination context

Decade2010s

Years ago9y

SeasonSpring (SH)

Start daySunday

Exam periodNovember 2017

Days since exam3,278

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Agricultural Sciences Memo 1 (English) →

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