SENIOR CERTIFICATE EXAMINATIONbesteducation.co.za/resources/English/Grade-12/... · Agricultural...
Transcript of SENIOR CERTIFICATE EXAMINATIONbesteducation.co.za/resources/English/Grade-12/... · Agricultural...
Copyright reserved Please turn over
SENIOR CERTIFICATE EXAMINATION
MARKS: 150
TIME: 2½ hours
This question paper consists of 15 pages.
AGRICULTURAL SCIENCES P1
2015
Agricultural Sciences/P1 2 DBE/2015 SCE
Copyright reserved Please turn over
INSTRUCTIONS AND INFORMATION 1.
This question paper consists of TWO sections, namely SECTION A and SECTION B.
2. Answer ALL the questions in the ANSWER BOOK. 3. Start EACH question on a NEW page. 4. Number the answers correctly according to the numbering system used in this
question paper.
5. 6. 7.
You may use a non-programmable calculator. Show ALL the calculations, including formulae, where applicable, and round off the answers to TWO decimal places. Write neatly and legibly.
Agricultural Sciences/P1 3 DBE/2015 SCE
Copyright reserved Please turn over
SECTION A QUESTION 1 1.1 Various options are provided as possible answers to the following questions.
Choose the answer and write only the letter (A–D) next to the question number (1.1.1–1.1.10) in the ANSWER BOOK, for example 1.1.11 A.
1.1.1 The part of the alimentary canal of the fowl that stores, soaks and
moistens food:
A Crop B Proventriculus C Ventriculus D Cloaca
1.1.2 ... is a solvent and transport medium during the absorption of food
and minerals.
A Bile B Bolus C Duodenal fluid D Water
1.1.3 The regurgitation of food from the reticulorumen into the buccal cavity
is caused by ...
A high acidity in the reticulorumen. B the presence of coarse material in the rumen. C an increase in the number of protozoa. D the accumulation of methane and carbon dioxide gas.
1.1.4 The following could be associated with a stressful condition
experienced by pigs:
A Eating hurriedly B Lying calmly C Belly nibbling D Wallowing in water
1.1.5 Tail docking in sheep is done to ...
A make animals ready for agricultural shows. B improve wool and meat quality directly. C enhance effective mating and prevent blowfly infestation. D improve their ability to digest roughage.
Agricultural Sciences/P1 4 DBE/2015 SCE
Copyright reserved Please turn over
1.1.6 The most recommended precautionary measure when transporting
farm animals:
A Transport male and female animals together B Travel when the roads are not busy and you can travel fast C Transport sheep, goats and cattle together D Ensure the loading/unloading ramps are high and strong enough
1.1.7 The following are examples of bacterial diseases in farm animals:
A Rabies, mastitis and coccidiosis B Tuberculosis, anthrax and mastitis C Swine flu, redwater and lumpy wool D Ringworm, anaplasmosis and mastitis
1.1.8 The process of fertilisation of the ovum by the spermatozoon takes
place in the ...
A Fallopian tube. B cervix. C uterus. D mammary glands.
1.1.9 Oogenesis in animals takes place in the ...
A spermatogonium. B corpus luteum. C oviduct. D ovary.
Agricultural Sciences/P1 5 DBE/2015 SCE
Copyright reserved Please turn over
1.1.10 The organ labelled D in the diagram below contains Sertoli cells
which produce ...
A spermatozoa. B testosterone. C nutrients for the spermatozoa. D libido. (10 x 2) (20)
1.2 Indicate whether each of the descriptions in COLUMN B applies to A ONLY,
B ONLY, BOTH A AND B or NONE of the items in COLUMN A. Write A only, B only, both A and B or none next to the question number (1.2.1–1.2.5) in the ANSWER BOOK, for example 1.2.6 B only.
Example: 1.2.6 COLUMN A COLUMN B A: Roughage A feed with a high percentage of TDN B: Concentrate
Answer: 1.2.6 B only
COLUMN A COLUMN B 1.2.1 A: Bone meal
Source of vitamin A B: Green lucerne
1.2.2 A: Mites and blowflies External parasites B: Ticks and mites 1.2.3 A: Maize bulb Poisonous plants B: Thorn apple 1.2.4 A: Testosterone Responsible for the development of
secondary masculine sexual characteristics B: Relaxin
1.2.5 A: Perimetrium Embryonic membrane B: Tunica albugenia
(5 x 2) (10)
A
B
C D
Agricultural Sciences/P1 6 DBE/2015 SCE
Copyright reserved Please turn over
1.3 Give ONE word/term/phrase for each of the following descriptions. Write only
the word/term/phrase next to the question number (1.3.1–1.3.5) in the ANSWER BOOK.
1.3.1 A gutter-shaped structure which carries milk from the oesophagus
directly into the abomasum in young lambs
1.3.2 The flora population in the reticulorumen responsible for the
digestion of crude fibre
1.3.3 The colour of the flag or aid attached to a stick or pole to signal
danger when moving animals by road
1.3.4 The process of cell division through which the primary
spermatocytes divide into secondary spermatocytes
1.3.5 The condition whereby twins of the opposite sex develop in the
same uterus of a cow and the female calf is sterile (5 x 2)
(10) 1.4 Change the UNDERLINED WORD in each of the following statements to
make the statements TRUE. Write only the answer next to the question number (1.4.1–1.4.5) in the ANSWER BOOK.
1.4.1 The enlargement of the thyroid gland in pigs is a result of selenium
deficiency.
1.4.2 Pelleting is a process of heating grains to expand it and improve its
palatability.
1.4.3 Prostaglandins are usually added to animal feeds to reduce stress
and promote calmness for a greater feed intake.
1.4.4 Animals not depending on the environmental temperature are
referred to as poikilothermic animals.
1.4.5 The hormone responsible for the release of milk from the udder
is insulin. (5 x 1)
(5)
TOTAL SECTION A: 45
Agricultural Sciences/P1 7 DBE/2015 SCE
Copyright reserved Please turn over
SECTION B QUESTION 2: ANIMAL NUTRITION Start this question on a NEW page. 2.1 The diagram below represents the alimentary canal of a farm animal.
2.1.1 Identify the type of farm animal represented in the diagram above. (1) 2.1.2 Motivate the answer to QUESTION 2.1.1 by naming THREE
structures in the diagram above.
(3)
2.1.3 Write down the letter (A–J) of the part where each of the following occurs: (a) Excretion (b) Microbial fermentation
(c) Mechanical digestion
(1) (1) (1)
2.2 The data below is available to a farmer to formulate a ration for dairy cows in
early lactation.
REQUIRED DIGESTIBLE PROTEIN
VALUE (DP) FEED DIGESTIBLE PROTEIN
VALUE (DP) (%)
17% Maize 9% Soya oilcake 44%
2.2.1 Use the Pearson square method to balance this ration. (3) 2.2.2 Calculate the percentage of maize and soya oilcake that is required in
the ration. Show ALL calculations.
(5)
A
B
C
D
E F
J
G
H I
Agricultural Sciences/P1 8 DBE/2015 SCE
Copyright reserved Please turn over
2.3 The graph below illustrates the production of lucerne over a period of one
year.
2.3.1 Calculate the total quantity of lucerne (kg/DM) required per year if 600 kg of lucerne is required per month.
(2)
2.3.2 Determine from the graph if there will be enough feed for the
animals for a period of one year. Give a reason for the answer.
(2) 2.3.3 Deduce from the graph the month with the highest level of
production.
(1) 2.3.4 Indicate TWO alternative feeds to fulfil the feed requirements of the
animals without selling some of them, in case the farmer does not produce enough lucerne.
(2)
2.4 A sow farrowed ten piglets in a concrete pen. After the piglets were weaned, it
was observed that the piglets suffer from iron deficiency.
2.4.1 What is the appropriate term for an iron deficiency? (1) 2.4.2 List THREE visible signs associated with the condition named in
QUESTION 2.4.1.
(3) 2.4.3 State TWO precautionary measures that could be taken to avoid
this condition in piglets.
(2)
Lucerne production over a period of one year Pr
oduc
tion
(kg/
DM
)
Months of the year
Jan.
Feb.
Mar
.
Apr
.
May
Jun.
Jul.
Aug
.
Sep.
Oct
.
Nov
.
Dec
.
Agricultural Sciences/P1 9 DBE/2015 SCE
Copyright reserved Please turn over
2.5 A concentrate ration was formulated and analysed for dairy cows. This ration
had a composition as indicated in the table below.
DIGESTIBLE PROTEIN (%)
TOTAL DIGESTIBLE NUTRIENTS (%)
10 80
2.5.1 Calculate the nutritive ratio of this ration. Show ALL calculations. (4) 2.5.2 Indicate the suitability of this ration to dairy cows. (1) 2.5.3 Give TWO reasons to support the answer to QUESTION 2.5.2. (2)
[35]
Agricultural Sciences/P1 10 DBE/2015 SCE
Copyright reserved Please turn over
QUESTION 3: ANIMAL PRODUCTION, PROTECTION AND CONTROL Start this question on a NEW page. 3.1 Two farmers, FARMER A and FARMER B, have each started an intensive
production venture with young lambs. The lambs are housed in different housing layouts as indicated in the table below.
FARMER A FARMER B Houses are long and narrow Houses are wide Oriented from east to west Faces north Built on a slight slope Built on level ground Cement floors Soil on the floor Dry bedding Becomes muddy when wet
3.1.1 Give a reason why FARMER A used the following housing layouts for
his lambs: (a) Building on a slight slope
(b) Dry bedding
(c) Cement floor
(d) Long narrow houses orientated from east to west
(1)
(1)
(1) (1)
3.1.2 Explain the impact of the following conditions on FARMER B's
production: (a) Housing facing north
(b) Muddy floor
(c) Build on level ground
(2)
(2)
(2) 3.2 The table below indicates the feed consumption and average weight gain for
beef cattle.
AVERAGE FEED CONSUMPTION
(KILOGRAMS PER DAY) AVERAGE WEIGHT GAIN
(GRAMS PER DAY) 1 80 2 160 3 240 4 320 5 400 6 475
3.2.1 Use the data in the table and draw a line graph to indicate the
average feed consumption and average weight gain for beef cattle.
(6) 3.2.2 Deduce from the graph the relationship between feed consumption
and weight gain.
(2)
Agricultural Sciences/P1 11 DBE/2015 SCE
Copyright reserved Please turn over
3.3 The diagram below indicates various stages of the life cycle of a parasite.
3.3.1 Give the name and indicate the type of parasite represented
above.
(2) 3.3.2 Classify the parasite according to its life cycle as indicated in the
diagram above.
(1) 3.3.3 Write down the letter (A–F) that represents each of the following
stages in the life cycle of the parasite in the diagram above: (a) The larvae that hatches from the eggs (b) The nymph that will feed on the second host (c) The tick that will feed on the third host (d) The first host
(1) (1) (1) (1)
3.3.4 Name TWO damaging effects this parasite could have on livestock. (2)
A
B
C
D
E
F
Agricultural Sciences/P1 12 DBE/2015 SCE
Copyright reserved Please turn over
3.4 The arable land on a certain farm is normally used for various crops and
planted pastures, some under irrigation. The irrigated pasture crops are used for dairy cattle and sheep in a feedlot. On the natural pastures, trees are planted and a rotational grazing system with the correct stocking rate is practised with commercial Nguni cattle.
3.4.1 Define the term intensive production system. (2)
3.4.2 Give evidence of TWO intensive production systems in the scenario
above.
(2) 3.4.3 Give TWO reasons for planting trees on natural pastures. (2)
3.4.4 State the scientific term for the farming system practised with the
commercial Nguni cattle.
(1) 3.4.5 Indicate how the feedlot can influence the stock density on the farm. (1)
[35]
Agricultural Sciences/P1 13 DBE/2015 SCE
Copyright reserved Please turn over
QUESTION 4: ANIMAL REPRODUCTION Start this question on a NEW page. 4.1 The pie chart below represents the oestrus cycle in cows.
4.1.1 Indicate the duration (in days) of the oestrus cycle in non-pregnant
cows.
(1) 4.1.2 Which percentage in the pie chart corresponds with the stage at
which the cow will allow mating with a bull?
(1) 4.1.3 Name the stage and hormone responsible for the condition in
QUESTION 4.1.2.
(2) 4.1.4 Indicate the hormone responsible for each of the following
percentages as represented in the pie chart: (a) 4% (b) 12% (c) 15% (d) 69%
(1) (1) (1) (1)
Stages in the oestrus cycle in cows
Agricultural Sciences/P1 14 DBE/2015 SCE
Copyright reserved Please turn over
4.2 A farmer had four bulls and 100 dairy cows on a farm. Mysteriously, all the
bulls were stolen. The farmer had no money to replace the bulls and therefore started looking for other options. The farmer was advised by an agricultural extension officer to consider using artificial insemination (AI).
4.2.1 Define the term artificial insemination. (3)
4.2.2 State TWO prerequisites for the successful administration of
artificial insemination.
(2) 4.2.3 List THREE dilutants commonly used to dilute semen. (3)
4.2.4 Suggest ONE method a farmer may adopt in order for the cows to
produce offspring without administering AI.
(1) 4.3 Farm animals should be sexually mature and produce healthy and viable
gametes. This should be followed up with the process of mating when the female animals are on heat.
4.3.1 State the FIVE stages of mating in sequential order. (5) 4.3.2 List THREE factors which regulate the mating behaviour of bulls. (3)
Agricultural Sciences/P1 15 DBE/2015 SCE
Copyright reserved
4.4 The illustration below shows the developing embryo in the uterus of a cow.
4.4.1 Write down the letter (A–H) and the name of the structure in the
illustration above that matches each of the following descriptions: (a) The structure that brings blood of the mother and the foetus in
close contact without mixing it (b) The membrane that protects the embryo from shocks and
injuries (c) The membrane surrounding the foetus closest to the uterus of
the mother
(2) (2) (2)
4.4.2 Name THREE functions of the part labelled B. (3) 4.4.3 Name the substance that is enclosed by the membrane labelled A. (1) [35]
TOTAL SECTION B: GRAND TOTAL:
105 150
Copyright reserved Please turn over
SENIOR CERTIFICATE EXAMINATION
MARKS: 150
This memorandum consists of 10 pages.
AGRICULTURAL SCIENCES P1
2015
MEMORANDUM
Agricultural Sciences/P1 2 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
SECTION A QUESTION 1 1.1 1.1.1
1.1.2 1.1.3 1.1.4 1.1.5 1.1.6 1.1.7 1.1.8 1.1.9 1.1.10
A 99 D 99 B 99 C 99 C 99 D 99 B 99 A 99 D 99 C 99 (10 x 2)
(20)
1.2 1.2.1
1.2.2 1.2.3 1.2.4 1.2.5
B only 99 Both A and B 99 B only 99 A only 99 None 99 (5 x 2)
(10)
1.3 1.3.1
1.3.2 1.3.3 1.3.4 1.3.5
Oesophageal groove 99 Bacteria/micro organisms 99 Red 99 Meiosis 99 Freemartin/freemartinism/queen 99 (5 x 2)
(10)
1.4 1.4.1
1.4.2 1.4.3 1.4.4 1.4.5
Iodine/I 9 Roasting 9 Tranquilisers 9 Homoeothermic/endothermic/warm blooded 9 Oxytocin 9 (5 x 1)
(5)
TOTAL SECTION A 45
Agricultural Sciences/P1 3 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
SECTION B QUESTION 2: ANIMAL NUTRITION 2.1 The alimentary canal of a farm animal 2.1.1 Type of farm animal represented by the diagram
Chicken/fowl/poultry/bird 9
(1) 2.1.2 Motivation for the answer
• Crop 9 • Proventriculus/granular/true stomach 9 • Ventriculus/muscular/gizzard 9 • Caeca/blind guts 9 • Cloaca/vent 9 (Any 3)
(3)
2.1.3 Letters of the parts where each of the following occurs (a) Excretion - I 9 (b) Microbial fermentation - G 9 (c) Mechanical digestion - D 9
(1) (1) (1)
2.2 Pearson square method 2.2.1 Pearson square method to balance the ration
Maize 9% 27 parts/27 9 17% 9 Soya oilcake 44% 8 parts/8 9
(3)
2.2.2 Calculations to show the percentage of feeds in a ration
Total: 27 + 8 = 35 9 % Maize: 27 ÷ 35 x 100 9 = 77,14/77% 9 % Soya oilcake: 8 ÷ 35 x 100 9 = 22,86/23% 9
(5)
Agricultural Sciences/P1 4 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
2.3 Fodder flow programme
2.3.3 Month with the highest production
• December 9
(1)
2.4.1 The appropriate term for this condition
Anaemia 9
(1) 2.4.2
THREE visible symptoms associated with the condition • Diarrhoea 9 • Paleness of the mucus membranes/skin 9 • Loss of appetite/anorexia 9 • Listlessness/appear tired/weakness 9 • Rapid breathing 9 • Loose, wrinkled skin 9 • Swelling of the head/eyes/shoulders 9 (Any 3)
(3)
2.4.3 TWO precautionary measures for this condition
• Iron/Fe-injection 9 • Putting soil sods in the pen 9 • Painting teats with an iron solution/iron sulphate 9 • Supplementing/creep feeding/ration 9 (Any 2)
(2)
2.3.1 Total quantity of lucerne (DM in kg) required per year 600kg x 12 9 = 7 200kg lucerne 9
(2)
2.3.2 Availability of feed for the animals for one year There will not be enough feed 9 Reason Animals require 7 200kg, production is 5 800kg of lucerne/1 400kg deficit/less feed 9
(2)
2.3.4
Alternatives to fulfill feed requirements of the animals • Protein rich supplement/sources 9 • Green fodder 9 • Plant crops to be used as silage 9 • Crop residues to be utilized as stover 9 (Any 2)
(2)
2.4 Piglets in a concrete pen
Agricultural Sciences/P1 5 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
2.5 Ration formulated for dairy cattle 2.5.1 Calculation of the nutritive ratio
% digestible non-nitrogen substances = TDN – DP
= 80% – 10% = 70 % 9 NR = 1: % DNNS OR NR = 1: %TDN – %DP 9
% DP %DP NR = 1: 70% 9
10% NR = 1:7 9
(4)
2.5.2
2.5.3
Suitability of ration • Unsuitable/not suitable 9
TWO reasons for the answer • NR is wider than 1:6 9 • Protein content is too low 9
(1) (2) [35]
Agricultural Sciences/P1 6 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
QUESTION 3: ANIMAL PRODUCTION, PROTECTION AND CONTROL 3.1 FARMER A and FARMER B have each started an intensive production
venture with young lambs
3.1.1 Reason for the housing layouts of FARMER A
(a) Building on a slight slope • Water can run off 9
(b) Dry bedding • Protect animals against cold 9
(c) Cemented floor • Easy to clean/hygienic conditions/avoid mud when wet 9
(d) Long building with long axis facing east • Warmer in winter/cooler in summer 9
(1) (1) (1) (1)
3.1.2 The impact on production for FARMER B:
(a) House facing north direction • Very hot in summer 9 • Warm in winter 9
(b) Muddy floor • Foot diseases 9 • Hygienic problems 9 • Parasite infestation 9 (Any 2)
(c) Build on level ground • Water cannot run off/poor drainage/stagnation of water 9 • Muddy/unhygienic conditions 9
(2)
(2) (2)
Agricultural Sciences/P1 7 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
3.2 Graph on feed consumption and weight gain for beef cattle 3.2.1 Line graph on average feed consumption/average weight gain
Criteria/rubric/marking guidelines
• Correct heading 9 • X axis - correctly calibrated and labelled (Feed consumption) 9 • Y axis - correctly calibrated and labelled (Weight gain) 9 • Correct units (kg/day and g/day) 9 • Accuracy 9 • Line graph 9
(6)
3.2.2
The relationship between feed consumption and weight gain • Weight gain is directly proportional to feed consumption 99
OR • The higher the feed consumed the higher/greater the weight
gain/vice versa 99
(2)
3.3 Various stages of the life cycle of a parasite 3.3.1 Name and type of parasite represented
• Bont tick 9 • External/ecto parasite 9
(2)
3.3.2 Classification of the type of parasite according to the life cycle
Three-host parasite 9
(1) 3.3.3 Letters representing the stages in the life cycle of the parasite:
(a) The larvae that hatches from the eggs - B 9 (b) The nymph feeding on the second host - D 9 (c) Ticks feeding on the third host - E 9 (d) The first host - C 9
(1) (1) (1) (1)
0
100
200
300
400
500
1 2 3 4 5 6
Aver
age
wei
ght g
ain
(g/d
ay)
Average feed consumption (kg/day)
Average weight gain and the average feed consumption of cattle
Agricultural Sciences/P1 8 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
3.3.4
TWO damaging effects this parasite has on livestock • Damage the skin/teats/genitals 9 • Lowering the resistance of the host 9 • Anaemia as a result of blood sucked from the host 9 • Transmission of diseases 9 • Death 9 • General deterioration 9 • Irritation 9 (Any 2)
(2)
3.4 Scenario on an integrated production system 3.4.1 Definition of intensive production system
• Small area with lots of animals 9 • Human and technological involvement and intervention 9 • High production in/outputs 9 • Independent from nature 9 (Any 2)
(2)
3.4.2 Evidence of TWO intensive production systems
• Irrigation 9 • Feedlot 9 • Planted pastures 9 (Any 2)
(2)
3.4.3
TWO reasons for planting trees on the natural pastures • Protect animals against extreme environmental conditions
(sunlight/heat/radiation/cold/wind/rain) 9 • Provide shade 9 • Provide shelter/protection 9 • Feeding/nutrition 9 (Any 2)
(2)
3.4.4 Scientific term for the farming system
• Extensive production system 9
(1) 3.4.5 Influence of feedlot on the stock density
• Stock density will go up/increase/improve/become more 9
(1) [35]
Agricultural Sciences/P1 9 DBE/2015 SCE – Memorandum
Copyright reserved Please turn over
QUESTION 4: ANIMAL REPRODUCTION 4.1 The pie chart is a representation of the oestrus cycle in cows 4.1.1 Duration of the oestrus cycle in non-pregnant cows
• 18 - 24 days 9
(1) 4.1.2 Percentage which corresponds with the stage at which the
cow will mate with a bull • 4% 9
(1)
4.1.3 Stage and hormone responsible for the condition
• Oestrus 9 • Oestrogen 9
(2)
4.1.4 The hormone responsible for each of the following
percentages: (a) 4% - Oestrogen 9 (b) 12% - Follicle stimulating hormone/FSH 9 (c) 15% - Luteinising hormone/LH 9 (d) 69% - Progesterone 9
(1) (1) (1) (1)
4.2 Artificial insemination
4.2.1 Definition of artificial insemination
• The collection of semen from the bull and 9 • Placing of the semen into the reproductive canal of a cow 9 • Leading to the fertilisation without natural mating 9
(3)
4.2.2
TWO prerequisites for the successful artificial insemination • Cows must be in oestrus/heat 9 • AI must take place on the correct point in oestrus/timing 9 • Use healthy/uninfected/viable semen 9 • Used sterilized instruments 9 • Done by qualified person/personnel/correct technique 9
(Any 2)
(2)
Agricultural Sciences/P1 10 DBE/2015 SCE – Memorandum
Copyright reserved
4.2.3 THREE dilutants commonly used to dilute semen
• Milk 9 • Fructose/glucose (nutrients) 9 • Egg yolk 9 • Lipids 9 • Glycerol 9 • Buffers/sodium citrate 9 • Antibiotics/penicillin 9 (Any 3)
(3)
4.2.4
ONE other method for his cows to produce offspring • Cloning 9 • Natural mating 9 (Any 1)
(1)
4.3 The process of mating
4.3.1 FIVE stages of mating in sequential order
• Courtship/Sexual attraction 9 • Mounting 9 • Copulation/intromission 9 • Ejaculation 9 • Dismounting 9
(5)
4.3.2 THREE factors regulating mating behavior among bulls
• Genetic make-up 9 • Environmental factors 9 • Physiological factors 9 • Health 9 • Experience 9 (Any 3)
(3)
4.4 Developing embryo
4.4.1 Identification of letters and the names of parts:
(a) G 9 Placenta 9 (b) A 9 Amnion 9 (c) F 9 Chorion 9
(2) (2) (2)
4.4.2 THREE functions of the part B (Amniotic fluid)
• Shock absorber 9 • Allow movement of foetus 9 • Regulates temperature 9 • Lubricates birth canal 9 • Prevents desiccation of foetus 9 (Any 3)
(3)
4.4.3 The substance that is enclosed by the membrane labelled A
• Amniotic fluid 9
(1) [35]
TOTAL SECTION B: 105
GRAND TOTAL: 150