55/1
55/1 OTI2MIDY07F3SN55P1J
SUGGESTED MARKING SCHEME SCIENCE PMR 2012 PAPER ONE (55/1)
FORM THREE
QUESTION NO. ANSWER QUESTION
NO. ANSWER
1 D 21 D 2 B 22 D 3 C 23 C 4 D 24 B 5 C 25 B 6 D 26 D 7 D 27 A 8 B 28 D 9 B 29 B
10 A 30 D 11 D 31 A 12 B 32 C 13 C 33 C 14 A 34 C 15 A 35 D 16 D 36 C 17 C 37 B 18 B 38 A 19 D 39 D 20 D 40 D
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NO Marking Scheme
Mark
1 (a)
X medulla Y cortex
1 1
(b)
Bean shape 1
(c)
3
TOTAL 6 2 (a)
Crab : Exoskeleton Fish : Endoskeleton Starfish: Hydrostatic Skeleton
1 1 1
(b)
Because the whale get support by the buoyancy of the water
1
Ureter Ureter
Removes urine from the body Menyingkirkan air kencing dari badan
Stores urine temporarily Menyimpan air kencing untuk sementara
Urethra Uretra
Urinary Bladder Pundi Kencing
Carries urine to the urinary bladder Membawa air kencing ke pundi kencing
SKEMA SAINS KERTAS 2 PERCUBAAN PMR 2012
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(c)
i Mantain the shape of the body ii protect the internal organ iii enable body to move Any 2
2
TOTAL 6 3(a)
P Flowering plant Q Conifer/ moss/ferns/alage/fungi
1 1
(b)
Monocotyledon has fibrous root, dicotyledon has tap root
1
(c)
Draw parallel vein for sugarcane Draw network vein for manggo tree
1 1
(d)
as a natural heritage/ supply raw materials/for tourism/provide food /provide oxygen
1
TOTAL 6 4(a)i ii
The lining of uterus wall fall down Prepares for the implantation of the embryo
1 1
(b)
On the 6 of June
1
(c)i ii iii
Fertilization Fallopion tiub Embrio Feotus
1 1 1
(d)
Ovaries unable to produce egg cell/ fallopion tube blocked/embryo cannot attach itself to the uterus wall/abnormal menstrual cycle/premature release of the egg cell
1
TOTAL 7
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5(a)i ii
Wooden block less denser than water Iron block
1 1
(b)
1 1 1
(c)
Iceberg is less denser than the sea water
1
(d)
The water level must be half or more than half
1
(e)
Use oil because oil is less denser than water (and it prevent oxygen)
1
TOTAL 8
R
Q
P
S
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6 (a) Activity Q Because the trolly move at certain distance(any reasonnable answer involve change in distance)
1 1
(b) i ii
Power = Time
work done
= 8
(50x10) x 1.3
= 81.25 waat Less power
1 1 1
(c)i ii
Situation Q Because its have to againts the gravitional force
1 1
TOTAL 7 7 (a) i ii
Q = 20 V R = 8 V When the number of turns in secondary coil increase the output voltage increase
1 1 1
(b)
The voltage output increase because the number of turn in secondary coil increase
1
(c)
P = 17.6 V
1
(d) i ii
7.2 (a) More bright 7.2 (b) Less bright When the number of turns in secondary coil increase the brightness of the bulb increase
1 1 1
(e)
classification transformer
Step up transformer P Step down transfomer R,S,Q
1 1
TOTAL 10
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8(a)i ii iii
Boy A feel more hot than boy B Boy A feel more hot because he wear black shirt( which absorb more heat) Black shirt/colour more hot than white shirt/colour (vise versa) / black shirt/colour absorb heat better than white shirt/ colour
1 1 1
(b)
Surface Temperature
Black paint 75 Aliminium paint 55
1 1
(c)
Transfer 2 point Draw bar cart with same wide
1 1
(d)
Manipulated variable Type of surface Responding variable Reading of thermometer
1 1
(e)
Absorption of heat is the reading of thermometer
1
TOTAL 10
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