Agricultural Sciences Grade 12 P1 Eastern Cape Mock 2019 Memo

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE GRADE 12 SEPTEMBER 2019 AGRICULTURAL SCIENCES P1 MARKING GUIDELINE MARKS: 150 The marking guidelines consists of 11 pages.

Downloaded from hlayiso.com 2 AGRICULTURAL SCIENCES P1 (EC/SEPTEMBER 2019) SECTION A QUESTION 1 1.1 1.1.1 B  1.1.2 C  1.1.3 B  1.1.4 A  1.1.5 D  1.1.6 A  1.1.7 B  1.1.8 C  1.1.9 C  1.1.10 D  (10 x 2) (20) 1.2 1.2.1 B only  1.2.2 Both A and B  1.2.3 None  1.2.4 A only  1.2.5 B only  (5 x 2) (10) 1.3 1.3.1 Biological Value/BV  1.3.2 Drenching gun/Dosing gun  1.3.3 Repeated Breeder Syndrome  1.3.4 Prostate  1.3.5 Hydrocephalus  (5 x 2) (10) 1.4 1.4.1 Maintenance  1.4.2 Battery  1.4.3 Super ovulation  1.4.4 Acrosome  1.4.5 Dry period  (5 x 1) (5) TOTAL SECTION A: 45 Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/SEPTEMBER 2019) AGRICULTURAL SCIENCES P1 3 SECTION B QUESTION 2: ANIMAL NUTRITION 2.1 Alimentary canals of farm animals 2.1.1 Classification of farm animals Diagram 1 – Non-ruminant  Diagram 3 – Ruminant  (2) 2.1.2 Reason for each classification Diagram 1 – It has a simple/monogastric stomach/ventriculus/ proventriculus  Diagram 3 – It has a complex/compound stomach  (2) 2.1.3 Determination of the age of the animal in Diagram 3 Young ruminant/calf  (1) 2.1.4 ONE feature visible for the age  Presence of oesophogal groove   Underdeveloped rumen/reticulum/omasum   Well-developed abomasum  (Any 1 x 1) (1) 2.1.5 Justification of animals not digesting crude fibre Diagram 2 – There are no rumen micro-organisms to digest crude fibre  Diagram 3 – Rumen is still underdeveloped/not functioning  (2) 2.1.6 Identification of the letter where rennin is secreted Diagram 1 – B  Diagram 3 – E  (2) 2.2 Indication of animal feeds (a) Oilcake meal  (1) (b) Maize meal  (1) (c) Sun dried hay  (1) (d) Green lucerne  (1) 2.3 Feed composition 2.3.1 Classification of feeds Feed A – Concentrates  (1) Feed B – Roughage  (1) Copyright reserved Please turn over

Downloaded from hlayiso.com 4 AGRICULTURAL SCIENCES P1 (EC/SEPTEMBER 2019) 2.3.2 Reason for classification Feed A Low percentage of crude fibre  High percentage of Total Digestible Nutrients/TDN  High percentage of protein  (Any 1) Feed B High percentage of crude fibre  Low percentage of Total Digestible Nutrients  Low percentage of protein  (Any 1) (2) 2.3.3 Calculation of nutritive ratio of FEED A Calculation of DNNE’s = TDN (12,5 + 6 + 60 + 1,5 = 80%) 80 – 12,5 = 67,5%  % digestible non-nitrogen substances Nutritive Ratio = 1 :  % digestible protein 67,5 1:  12,5 1 : 5,4  OR Calculation of DNNE’s = TDN (12,5 + 6 + 60 + 1,5 = 80%)  TDN – DP Nutritive Ratio = 1 :  DP 80 – 12,5 1:  12,5 1 : 5,4  (4) 2.3.4 Recommendation of FEED A Recommended for growth purpose  (1) Reason NR is narrow/more protein for growth  (1) 2.4 Process in the alimentary canal 2.4.1 Identification of the process Absorption of food  (1) 2.4.2 Name of the part where absorption occurs Small intestine  (1) 2.4.3 Identification of the type of nutrient transport A – Passive absorption  B – Active transport  (2) 2.4.4 Reason for the type of transport A/Passive absorption – Nutrients move along concentration gradient  B/Active transport – Nutrients move against concentration gradient  (2) Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/SEPTEMBER 2019) AGRICULTURAL SCIENCES P1 5 Copyright reserved Please turn over

Downloaded from hlayiso.com 6 AGRICULTURAL SCIENCES P1 (EC/SEPTEMBER 2019) 2.5 Feed flow programme 2.5.1 Identification of the month for culling animals Month 6  (1) 2.5.2 Reason  Feed available is the lowest   Supplementary requirement is the highest  (Any 1 x 1) (1) 2.5.3 Calculation of feed available in tons during month 2 800 kg/ha x 14 ha  11 200 kg  1 000 11,2 tons  (3) [35] Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/SEPTEMBER 2019) AGRICULTURAL SCIENCES P1 7 QUESTION 3: ANIMAL PRODUCTION, PROTECTION AND CONTROL 3.1 Graph on temperature requirement of broiler chickens 3.1.1 Deduction of the trend of temperature requirement  From week 1 to week 5 it decreases gradually  From week 5 to week 7 it is constant  (2) 3.1.2 Line graph Criteria/rubric/marking guideline  Correct heading   X-axis: Correctly calibrated and labelled (Age)   Y-axis: Correctly calibrated and labelled (Temperature)   Line graph   Correct units (Weeks and °C)   Accuracy  (6) 3.1.3 Equipment that can be used if temperature drops below 10 °C Heaters/Infrared lights/Air conditioner  (Any 1 x 1) (1) 3.2 Bull under stress 3.2.1 THREE visible signs showing distress  Pawing   Raised hair   Snorting   Raised tail  (3)  Feigned charging movements  (Any 3 x 1) Copyright reserved Please turn over

Downloaded from hlayiso.com 8 AGRICULTURAL SCIENCES P1 (EC/SEPTEMBER 2019) 3.2.2 Effect of the behaviour to handlers Injury  (1) 3.2.3 Equipment to calm the bull Electric prodder  (1) 3.2.4 THREE guidelines for handling large farm animals  Avoid yelling at animals   Do not approach animals from a blind spot   Move animals through a chute that has minimal obstructions   Never prod animals if they have no place to go   Announce your presence by touching it  (Any 3 x 1) (3) 3.3 Production unit/ system 3.3.1 Identification of the production system Intensive production system  (1) 3.3.2 Reason Presence of facilities  Animals are kept in an enclosure  High capital investment  (Any 1) (1) 3.3.3 Identification of the letter (a) C/D  (b) B (c) D/C  (3) 3.4 FOOT-AND-MOUTH DISEASE/FMD 3.4.1 Naming the pathogen Virus  (1) 3.4.2 Extraction of a term from scenario meaning FMD can be transferred Contagious  (1) 3.4.3 Key symptom of FMD Blister-like lesions on the tongue/between the toes  (1) 3.4.4 TWO state actions from the scenario  Impose trade regulation   Veterinary services   Quarantine  (Any 2 x 1) (2) Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/SEPTEMBER 2019) AGRICULTURAL SCIENCES P1 9 3.5 Parasites 3.5.1 Choosing the parasite (a) Nasal worm  (1) (b) Liver fluke  (1) (c) Bont tick  (1) (d) Tape worm  (1) (e) Blowfly  (1) 3.6 THREE basic principles of good health  Sanitation   Controlling pests and parasites   Proper handling of manure   Isolation of sick animals   Vaccination of animals   Good management   Ensure that feeds are not contaminated   Waiting for a withdrawal period before using animal product   Application of correct dosage of medication   Burning carcass of infected animals  (Any 3 x 1) (3) [35] Copyright reserved Please turn over

Downloaded from hlayiso.com 10 AGRICULTURAL SCIENCES P1 (EC/SEPTEMBER 2019) QUESTION 4: ANIMAL REPRODUCTION 4.1 Reproductive systems 4.1.1 Identification of the letter (a) Diagram 1 – A  Diagram 2 – D  (2) (b) C (1) (c) E (1) (d) A (1) 4.1.2 Common congenital defect in bulls and cows causing sterility Hypoplasia  (1) 4.1.3 TWO hormones responsible for ovulation Luteinizing hormone  Oestrogen hormone  (2) 4.2 TWO senses regulating mating behaviour in bull  Smell   Sight   Touch/tactile/contact  (Any 2) (2) 4.3 Artificial Insemination 4.3.1 Arrangement of the steps during AI chronologically  Semen harvesting   Semen examination   Semen dilution   Heat detention   Placing of semen into the reproductive tract of a cow  (5) 4.3.2 TWO economic benefits of AI for the farmer  More female animals can be fertilised by superior male animals   It is a quick and economic way of improving the herd   Commercial value of herd is improved   No need to buy an expensive bull   Higher conception rate  (Any 2 x 1) (2) Copyright reserved Please turn over

Downloaded from hlayiso.com (EC/SEPTEMBER 2019) AGRICULTURAL SCIENCES P1 11 4.4 Cloning 4.4.1 Identification of the process Cloning/Nuclear transfer  (1) 4.4.2 Letter of the sheep that is identical to the cloned sheep Sheep A  (1) 4.4.3 Letter of a sheep that will be a surrogate Sheep E  (1) 4.4.4 Name of the processes in C Enucleation  (1) 4.4.5 TWO aims of cloning  To produce large number of genetically identical animals   To produce offspring from high quality animals   To preserve superior genetics   To increase the number of endangered species  (Any 2 x 1) (2) 4.5 Gestation stages 4.5.1 Identification of the process Fertilisation  (1) 4.5.2 Indication of the stage of pregnancy labelled A Ovum stage  (1) 4.5.3 Development that occurs at stage C Rapid increase of the uterus (1) 4.5.4 TWO systems developing at stage B  Respiratory system   Digestive system   Uro-genital and vascular system   Central nervous system  (Any 2 x 1) (2) 4.5.5 TWO reasons for abortion  Hormonal or metabolic abnormalities   Malnutrition   Trauma and injuries   Poisoning   Infections   Allergies and twinning   Genetic/chromosomal defects  (Any 2 x 1) (2) Copyright reserved Please turn over

Downloaded from hlayiso.com 12 AGRICULTURAL SCIENCES P1 (EC/SEPTEMBER 2019) 4.6 Parturition 4.6.1 Indication of the form of presentation (a) Anterior presentation  (1) (b) Posterior presentation  (1) 4.6.2 Presentation that will need vetenary assistance  Posterior presentation  (1) 4.6.3 TWO problems causing difficult birth  Deviation of head   Flection of the elbow   Retention of one or both forelegs   Congenital defects/deformities   Twins  (Any 2 x 1) (2) [35] TOTAL SECTION B: 105 GRAND TOTAL: 150 Copyright reserved Please turn over