[Edu.joshuatly.com]Times Afterschool.my Revision 2012 Biology [805DCE1F]

126 SOALAN ULANGKAJI SPM 2012

BiologyAnalysis

[4551/1][4551/2][4551/3]

Chapter 2007 2008 2009 2010 2011P1 P 2 P 3 P 1 P 2 P 3 P1 P 2 P 3 P 1 P 2 P 3 P 1 P 2 P 3

O A B/ C Q1 Q2 O A B/

C Q1 Q2 O A B/ C Q1 Q2 O A B/

C Q1 Q2 O A B/ C Q1 Q2

1. Introduction to Biology

F 2. Cell Struc. and Cell Org. 4 2 1 2 0.5 4 1 4 1

O 3. Movement of Sbst acr Pl. Mbr 2 1 3 1 1 5 0.5 3 1 4 1

R 4. Chemical Comp. of the Cell 3 3 3 1 2 1 3 1

M 5. Cell Division 3 1 2 1 2 1 0.5 36. Nutrition 8 1 8 1 7 1 1 6 1 5 0.5 0.5

4 7. Respiration 3 1 1 3 6 1 5 1 3 0.58. Dynamic Ecosystem 5 1 3 1 3 1 5 1 4 0.59. Endangered

Ecosystem 3 1 3 1 4 2 1 3 1

No. of question for Form 4 31 2 3 1 1 27 2 3 1 1 32 2 2 1 1 28 3.5 2 1 1 29 3 2 1 0F 10. Transport 4 5 1 5 1 3 1 3 1O 11. Locomotion and

Support 1 5 1 1 1 1 5 1

R 12. Coordination and Response 6 1 1 4 1 5 4 1 4 1

M 13. Reproduction & Growth 5 5 1 5 1.5 8 3 1

14. Inheritance 2 1 2 1 1 1 3 5 0.55 15. Variation 2 2 1 0.5 3 0.5 1 0.5

No. of question for Form 5 19 3 1 0 0 23 3 1 0 0 18 3 2 0 0 22 1.5 2 0 0 21 2 2 0 1TOTAL 50 5 4 1 1 50 5 4 1 1 50 5 4 1 1 50 5 4 1 1 50 5 4 1 1

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127 SOALAN ULANGKAJI SPM 2012 SOALAN ULANGKAJI SPM 2012

Diagram 1

Biology Paper 1 [4551/1]

1. Diagram 1 shows a unicellular organism, Amoeba sp.

What is the use of structure W? A Excretion C Reproduction B Locomotion D Osmoregulation

2. The following information shows the cell organization in multicellular organisms.

Which is an example of X?

3. Diagram 2 shows a process carried out by Amoeba sp.

Diagram 2

What is the process? A Osmoregulation C Phagocytosis B Binary fission D Diffusion

4. Diagram 3 shows the specialisation of plant cells forming tissue P.

Diagram 3

What is tissue P? A Epidermis C Palisade mesophyll B Xylem D Phloem

5. Diagram 4 shows a plant cell immersed in a hypertonic solution.

Diagram 4

Which of the following shows the plant cell after it has been transferred to a hypotonic solution for 10 minutes?

6. Diagram 5 shows the condition of an onion cell after being immersed in a solution.

What is the phenomenon? A Turgid C Crenation B Plasmolysis D Deplasmolysis

Diagram 5

Cell Tissue Organ X Multicellular organism

Diagram 4



Diagram 8

7. Diagram 6 shows a model of the plasma membrane.

Diagram 6 What is Y?

A Cholesterol C Pore protein B Phospholipid D Carrier protein

8. Diagram 7 shows the initial and final stages of an experiment.

Diagram 7

What causes the formation of sucrose solution in the cavity of the potato?

A Sucrose solution from the potato moved into the cavity by diffusion

B Sucrose molecules from the cavity moved into the potato by diffusion

C Water molecules from the distilled water moved into the cavity by osmosis

D Water molecules from the distilled water moved into the potato by osmosis

9. Diagram 8 shows the action of an enzyme on a substrate.

Diagram 8

What are X, Y and Z?

10. Diagram 9 shows Muthu’s shirt with a blood stain before and after being washed with an enzyme containing detergent.

Before

Blood stain

After Diagram 9

Which is the most suitable enzyme and temperature to give the result shown?

Diagram 10

11. Diagram 10 shows one of the levels of protein structures. An example of a protein having the above protein structure is A silk C hormone B keratin D haemoglobin

Diagram 10

Diagram 11

Diagram 12

Diagram 11

12. Diagram 11 shows a stage in one of the phases in meiosis. What is the importance of X? A Replace dead cells. B Variation among the spesies. C Maintains diploid chromosome number in a zygote. D Causes genetically identical from the parent cell to next

generation

Diagram 12 13. Diagram 12 shows a cell undergoing stage P of mitosis. What is stage P?

A Prophase B Metaphase C Anaphase D Telophase

X Y ZA Enzyme Enzyme -

substrate complexProducts of the

reaction

B Substrate Enzyme - substrate complex

Products of the reaction

C Products of the reaction

Enzyme Enzyme - substrate complex

D Products of the reaction

Enzyme - substrate complex

Enzyme

10. Diagram 9 shows Muthu’s shirt with a blood stain before and after being washed with an enzyme containing detergent.

Enzyme TemperatureA Protease 18oC

B Protease 37oC

C Lipase 18oC

D Lipase 37oC



Diagram 13

14. Diagram 13 shows a diploid cell. This cell is undergoing meiosis.

Diagram 13

If one of the homologous chromosome pairs does not separate during Meiosis I, how many chromosomes can be found in the gametes?

A 8 B 4 C 5 D 7

15. Table below shows the types and quantity of food taken by a Marina in a day.

The total energy obtained by the Marina is A 4900 kJ C 6300 kJ B 6100 kJ D 6500 kJ

16. Diagram 14 shows part of the human digestive system.

Diagram 14 Diagram 14

A patient is suffering from disease of organ P and the patient’s organ P was removed by surgery. Which of the following type of food has to be reduced by the patient?

A Bread C Mango B Biscuit D Margarine

17. Table below shows the average volume of solutions R, S, T and U needed to decolourise 1ml of DCPIP solution.

Which of the solution contains the lowest ascorbic acid content?

A R B S C T D U

18. Diagram 15 shows an experiment set-up to investigate factors which affect the rate of photosynthesis.

Diagram 15

Diagram 15 Which of the following will increase the rate of

photosynthesis in the experiment? A Using a water bath at 600 C B Placing a 100W bulb 20 cm from the Hydrilla C Using 0.1% sodium hydrogen carbonate solution D Replacing the Hydrilla with Elodea

19. Diagram 16 shows a child suffering from a disease.

The child suffers the disease because he lacks

A vitamin C protein B fibre D carbohydrate

20. Diagram17 shows the arrangement of equipment required to measure the gaseous content of air.

Diagram 16

Diagram 17

What is the percentage of oxygen content in the exhaled air? A 4.2 % B 8.5 % C 11.0 % D 21.0 %

Types of foods Quantity/g Energy/kJ per 100gRice 150 2000

Potatoes 50 3000Milk 200 300Beef 150 800

Diagram 16

Length of exhaled air column = 10.0 cmLength of exhaled air column after treatment with potassium hydroxide = 9.6 cmLength of exhaled air column after treatment with potassium pyrogallate = 8.5 cm

Diagram 17


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21. Diagram 18 shows the longitudinal section of thorax viewed from the side.

Diagram 18

Diagram 18

During the breathing process, which of the following occurs when the diaphragm is shaped as in diagram 18?

22. Diagram 19 shows the apparatus set up to investigate the activity of yeast.

What can be observed after 30 minutes?

A X and Y only C X and Z only B Y and Z only D X, Y and Z

23. A farmer carries out an experiment to estimate the snail population in a farm. The farmer captures 90 snails and marks the snails before releasing them. After a week, the farmer catches some snails again, 20 are marked and 50 are unmarked. What is the estimated snail population in the farm?

A 126 C 425 B 315 D 530 24. A former mining ground can form a primary forest. Which

of the following sequence is correct in the formation of the primary forest?

A Successor, climax community, pioneer B Pioneer, climax community, successor C Successor, pioneer, climax community D Pioneer, successor, climax community

Diagram 19

Diagram 19

25. Which of the following are adaptations by the Sonneratia sp. to be able to grow in the mangrove swamp?

I Thick and succulent leaves II Vivipary III Buttress roots IV High osmotic pressure in the cell sap A I and II C I, II and III B I and III D I, II and IV

26. Diagram 20 is a graph which shows changes in the population of two species of beetles, P and Q, over a period of time. Both species feed on the same food source.

What is the inter-relationship between species P and Q? A Symbiosis C Parasitism B Predation D Competition 27. Nitrates and phosphates from farmland that flow into a lake

caused rapid growth of algae. What is described by the above situation? A Eutrophication C Fertilizer accumulation B Pesticide pollution D Colonisation 28. In an experiment to determine the Biochemical Oxygen

Demand, a sample of lake water was found to have a high BOD value. What does the above situation tell?

A The water is not polluted B The number of aquatic organism is high C The water has a high oxygen content D Microorganisms are abundant

29. Diagram 21 shows a human activity.

Diagram 21

Which of the following is the effect of the above activity? A Decrease in B.O.D. value B Increase the habitat of the fauna C Decrease the temperature in North Pole D Increase the carbon dioxide level in the atmosphere

Diagram 21

External intercostals muscles

Ribcage Movement of air

A Relax Moves downwards and inwards

Air is forced out of the lungs

B Relax Moves upwards and outwards

Air is forced out of the lungs

C Contract Moves downwards and inwards

Air is sucked into the lungs

D Contract Moves upwards and outwards

Air is sucked into the lungs


Population



30. Diagram 22 shows a longitudinal section of the human heart.

Which of the labelled parts A, B, C and D pumps blood to the lungs?

31. Diagram 23 shows a cross section of a part of a dicotyledonous plant. Which labelled part function to transport water and mineral ions?

32. Diagram 24 shows a blood circulatory system. What is this type of the blood circulatory system?

A Open circulatory system B Double circulatory system C Single, closed and complete circulatory system D Single, closed and incomplete circulatory system

33. Diagram 25 shows a human vertebra. What is structure X?

A Centrum B Transverse process C Spinous process D Transverse foramen



Diagram 24

Diagram 25

Diagram 25

34. Diagram 26 shows human elbow joint. Which of the parts labelled A, B, C and D absorbs shock during movement?

35. Diagram 27 shows the flight muscles in a bird.

What are the actions of muscles X and Y in a downstroke

movement of the wings?

36. Diagram 28 shows some human bones. Which bone is part of the axial skeleton?

37. Diagram 29 shows an aquatic plant. What helps this plant to float?

A Parenchyma cells C Collenchyma cells B Aerenchyma cells D Schlerenchyma cells

Diagram 26

Diagram 27

Diagram 27

Diagram 26

Diagram 28


X Y

A Relax RelaxB Relax ContractC Contract RelaxD Contract Contract

Diagram 28



Diagram 33

38. Diagram 30 shows the structure of human brain. Which of the parts labelled A, B, C and D controls body balance?

39. Diagram 31 shows the different endocrine glands in a human. Which gland labelled A, B, C or D is known as ‘the Master gland’?

40. Diagram 32 shows a part of the nephron. What process happens at X?

A Reabsorption C Ultraflitration B Secretion D Ultrasecretion

41. Diagram 33 shows the female reproductive system.

Which of the parts, A, B, C or D is the place where

implantation occurs?

Diagram 30

Diagram 30

Diagram 31

Diagram 31


Diagram 33

42. Diagram 34 shows the changes in the thickness of the uterus wall during the menstrual cycle.

When is ovulation most likely to occur? A W B X C Y D Z

43. Diagram 35 shows the stages in the development of a follicle in the ovary of human.

What hormone is produced by Q? A Progesterone C Follicle stimulating hormone B Estrogen D Testosterone

44. Diagram 36 shows a growth curve of a balsam plant.

Which of the following deduction is true from the graph? A The growth is slowest from X to Y. B The fastest rate of growth occurs from V to W. C There is rapid growth from Y to Z due to maturation. D The decrease in growth from U to V is due to respiration.


Diagram 35

Diagram 35

Diagram 36

Diagram 36



45. A homozygous rounded yellow seed pea is crossed with a wrinkled green seed. Rounded seed is dominant to wrinkled seed while yellow seed is dominant to green seed. Two progenies from the first generation (F1) are crossed with one another. What is the phenotypic ratio of the second

generation (F2)?

A All round seeds B 3 round yellow : 1 wrinkle green C 9 round yellow: 3 round green : 3 wrinkle yellow: 1

wrinkle green D 1 round yellow: 1 round green: 1 wrinkle yellow: 1

wrinkle green

46. Diagram 37 shows the formation of an ovum in human.

Male somatic cell with 44 + XY chromosomes forms two types of sperms, one with sex chromosome X and the other one with sex chromosome Y.

The sperm with sex chromosome Y fertilises an ovum. What is the combination of chromosomes in the zygote

formed? A 22 + XX C 44 + XX B 22 + XY D 44 + XY

47. What type of chromosomal mutation is shown in Diagram 38?

A Deletion B Inversion. C Duplication. D Translocation.

Diagram 37

Diagram 37

48. Diagram 39 shows the karyotype of an offspring that has undergone mutation.

The offspring suffered a genetic disease. Of the following, which is a characteristic of the offspring suffering from this genetic disease?

A Intelligent B Webbed neck C Feminine characteristics D Widely spaced and slanted eyes

49. A woman with blood group A claims that a man with blood group AB is the father of her baby. The baby’s blood is tested. Which of the following could be the baby’s blood group?

I Group A II Group B III Group O IV Group AB

A I and II only C I, II and IV only B I and IV only D I, II, III and IV

50. The weight of each student in Form 5 Berdikari is measured

and recorded. Which of the following shows the variation in weight of students in Form 5 Berdikari?

Diagram 39

Diagram 39

Diagram 38

Diagram 38

A C

B D

END OF QUESTION PAPER




Section A [60 marks]

Answer all questions in this section.

1. Diagram 1 shows some specialised cells and tissue.

(a) (i) Name cell W and tissue Y.

W : ___________________________________________________________________ Y : ___________________________________________________________________ [2 marks]

(ii) State one function of cell W and tissue Y.

Cell W : _______________________________________________________________ Tissue Y : _______________________________________________________________ [2 marks]

(b) (i) Name the system which consist cell Z. ______________________________________________________________________ [ 1 mark ] (ii) Explain one role of cell Z in the system named in (b)(i). ______________________________________________________________________ [2 marks]

(c) Explain one characteristic of tissue X to facilitate water absorption from soil. ______________________________________________________________________ [2 marks]

(d) Herbicide is capable to stop the transportation of some mineral into a plant through tissue X. Explain why. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ [3 marks]

Diagram 1



2. Diagram 2.1 shows 2 stages in a cell cycle that occur in an animal’s skin.

(a) (i) State the type of cell division involved in the cell cycle. ______________________________________________________________________ [ 1 mark ]

(ii) State one reason for your answer in (a)(i). ______________________________________________________________________ ______________________________________________________________________ [ 1 mark ]

(b) (i) Explain the chromosomal behaviour in stage Q. ______________________________________________________________________ ______________________________________________________________________ [2 marks]

(ii) State the importance of the chromosomal behaviour in mentioned in (b)(i). ______________________________________________________________________ [ 1 mark ]

(c) Somatic cells of the animal has four chromosomes. In Diagram 2.2, draw and label a diagram showing the chromosomal behaviour after stage P. [3 marks]

(d) (i) A farmer wants to breed a good variety of pineapple plants for commercial production. Suggest a suitable method to be used which involved the cell cycle in Diagram 2.1. ______________________________________________________________________ ______________________________________________________________________ [ 1 mark ]

(ii) Explain how the method named in (d)(i) can increased the crop yield. ______________________________________________________________________ ______________________________________________________________________ ______________________________________________________________________ [3 marks]

Diagram 2.1P Q

Diagram 2.2



3. Diagram 3 shows a pond ecosystem.

(a) Biotic and abiotic components influence the lives of organisms in Diagram 3. Name 2 biotic components and 2 abiotic components which influence the ecosystem in Diagram 3.

Biotic components: _________________________________________________________ Abiotic components: ________________________________________________________ [2 marks]

(b) (i) Based on the Diagram 3, construct a food chain consisting of four trophic levels. ______________________________________________________________________ [ 1 mark ]

(ii) Based on constructed food chain in (b)(i) construct a pyramid of numbers.

[2 marks]

(iii) An organism in the third trophic level in the food chain you have constructed in (b) (i) has decreased in numbers. Suggest a way to increase the number of this organism.

______________________________________________________________________ ______________________________________________________________________ [ 1 mark ]

(c) (i) The organisms in the first trophic level absorbs 15 000kJ solar energy. Energy loss at each trophic level is 90%. Calculate the total energy transferred to the organisms in the third trophic level.

= ______________kJ[2 marks]

(ii) State two ways in which energy may be lost in the food web. 1. __________________________________________________________________ 2. __________________________________________________________________ [2 marks]

(d) Many problems related to the environment are the results of human activities. Explain one bad effect of the activities on the ecosystem ______________________________________________________________________ ______________________________________________________________________ [2 marks]

Diagram 3



4. Diagram 4.1 shows the regulation of specific hormones towards the development in the ovary.

(a) (i) Name hormone P and state its function. ______________________________________________________________________ ______________________________________________________________________ [2 marks]

(ii) Explain why an imbalance of hormone W and Q can cause the disruption of the ovulation process. ______________________________________________________________________ ______________________________________________________________________ [2 marks]

(iii) Explain the relationship between structure Y and the level of hormone X from the 16th to 28th day. ______________________________________________________________________ ______________________________________________________________________ [2 marks]

Diagram 4.1



Diagram 4.2 shows a human foetus in his mother’s uterus.

(b) State the importance of fluid M. _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________

[ 1 mark ]

(c) In the 16th week, a pregnant mother was infected with a disease. The infection caused structure N to stop functioning. The mother miscarriaged. Explain this statement.

_______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________

[2 marks]

(d) Human chorionic gonadotrophin hormone (HCG) has a similar role to luteinizing hormone (LH). A wife has a problem conceiving due to the failure in ovulation. The wife becomes pregnant after a doctor has given her

injections of HCG.

Based on above statement, explain how HCG injections enable the process of pregnancy. _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________

[3 marks]

Diagram 4.2

Diagram 4.2



5. Diagram 5.1 shows the human karyotype for individual P and Q, and the gametes that can be produce through process X.

(a) Name process X. ______________________________________________________________________ [ 1 mark ]

(b) (i) State the total chromosome number in a somatic cell for individual P and individual Q. ______________________________________________________________________ [ 1 mark ]

(ii) State one difference between individual P and Q. ______________________________________________________________________ [ 1 mark ]

(c) (i) Gamete M and N are gametes produced through process X. Complete Diagram 5.1 to show the number and type of chromosomes inherited by gamete M and N.

[2 marks] (ii) State two characteristics of individual P. 1. _____________________________________________________________________ 2. _____________________________________________________________________ [2 marks]

(d) Colour blindness is a sex-linked disease. Diagram 5.2 shows the inheritance of colour blindness in a family. (i) Complete the diagram 5.2 to show the inheritance of colour blind in the family. [3 marks]

(ii) Based on your answers in (c)(i), state the percentage of the offspring that would suffer from colour blindness.______________________________________ [ 1 mark ]

(iii) Name another example of sex-linked disease.______________________________________ [ 1 mark ]

Diagram 5.1

Diagram 5.2



Section B[20 marks]

Answer any two questions.

6. (a) (i) Diagram 6.1 shows the formation of glomerular filtrate in process Y during urine formation.

Base on Diagram 6.1; describe briefly the formation of the glomerular filtrate. [ 4 marks ] (ii) En. Hamzah was informed by his doctor that his left kidney fail to function. By using your biology knowledge, explain the effect of his kidney failure on his health and give a suggestion to overcome this problem.

[ 6 marks ]

(b) Table 6.2 shows the concentration of solutes in the blood plasma, glomerular filtration and urine of an adult.

Base on the Table 6.2; explain why the concentration of solutes in the plasma, glomerular filtration and urine of the adult are different. [10 marks]

Diagram 6.1 Diagram 6.1

Table 6.2

Solute Concentration of solutes (g/dm3 )Blood plasma Glomerular filtrate Urine

Glucose 1.0 1.0 0.0Amino acid 1.5 1.5 0.0Protein 80.0 0.0 0.0Urea 0.3 0.3 20.0Sodium ion, Na+ 3.2 3.2 1.6



7. Diagram 7.1 shows cell P and tissue Q. P is a unicellular organism whereas Q is found in a multicellular organism.

(a) (i) Based on Diagram 7.1, explain the cellular respiration process that occurs in the following conditions: [4 marks] •RespirationoccursinPduringfermentation •RespirationoccursinQduringwalking

(ii) Explain the importance of increased pulse rate during vigorous activity and why it takes several minutes for the pulse rate to return to normal after the activity. [6 marks]

(b) Diagram 7.2 shows the respiratory organs of a fish and a human.

M and N are structures which are adapted to function in their respective habitats. Compare and explain the adaptations. [10 marks]

Diagram 7.1

M Diagram 7.2 Diagram 7.2



8. Diagram 8 shows the assimilation of digested food in the organ and body cell.

a) Based on Diagram 8, explain the assimilation of the following types of food : (i) glucose (ii) amino acids (iii) lipids [10 marks]

b) Energy requirement for a girl aged 15 is 9000 kJ daily. Table below shows types of food, quantity and energy content of her daily menu.

Calculate the total energy value taken by the girl daily. If she continues to take the menu everyday for a long time, explain the consequences of the habit to her health.

[10 marks]

Diagram 8 Diagram 8



9. Diagram 9.1 shows the eutrophication process that occurs to a lake due to the human activities.

(a) Based on the Diagram 9.1, explain what is meant by `eutrophication`. [10 marks]

(b) Explain how each of the following can reduce water pollution: (i) Treating sewage (ii) Using organic fertilizers rather than inorganic ones. [6 marks]

(c) Diagram 9.2 shows an activity carried out with the intention to build a housing estate in the area.

Explain how the above activity can cause flash flood to the area. [4 marks]

Diagram 9.1

Diagram 9.1

Diagram 9.2





1. Diagram 1 shows an experiment set-up to investigate the rate of transpiration of a plant under different light intensity. At the beginning of the experiment, the leafy shoot is placed at a distance of 50 cm from the light source (table lamp). The time taken for the air bubble to travel a distance of 10 cm is recorded. The experiment is repeated by putting the leafy shoot at a distance of 40 cm, 30 cm and 20 cm from the light source. The results of the experiments are shown in Table 1.

Diagram 1

(a) Record accurately the time taken for the air bubble to travel a distance of 10 cm for the different distance of the leafy shoot from the light source in Table 1.

[3 marks]

Table 1



(b) (i) Based on Table 1, state two different observations. Observation 1: _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ Observation 2: _________________________________________________________________________ _________________________________________________________________________

_________________________________________________________________________ [3 marks]

(ii)State the inferences which correspond to the observation in 1(b)(i). Inference from observation 1: _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ Inference from observation 2 _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ [3 marks]

(c) Complete Table 2 based on this experiment.

[3 marks]Table 2



(d) State the hypothesis for this experiment. _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ [3 marks] (e) (i) Based on Table 1, construct a table and record all the data collected in the experiment. Your table should have the following titles: •Distanceofleafyshootfromlightsource •Lightintensity •Timetakenfortheairbubbletotraveledadistanceof10cm •Rateoftranspiration Use the formula:

Rate of transpiration = Distance traveled by air bubble (cm) /time taken (min)

Light intensity = 1/distance (cm)

[3 marks]



(ii) Use a graph paper to answer this part of the question. Using the data in 1e (i), draw a graph of the rate of transpiration against light intensity.

[3 marks]



(f ) Based on the graph in 1e (ii), explain the relationship between light intensity and rate of transpiration. _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________

[3 marks]

(g) Based on the results of the experiment, state the operational definition for rate of transpiration? _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________

[3 marks]

(h) If the leafy shoot placed at a distance of 50 cm is repeated but the surfaces of the leaves of the plant are covered with vaseline, predict the rate transpiration. Explain your prediction.

_____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________

[3 marks]

(i) Categorise all the materials and apparatus labeled in Diagram 1 in Table 3.

Table 3

[3 marks]

Materials Apparatus



2. Due to numerous complaints received from residents about water pollution in rivers all over Malaysia, the Department of Environment (DOE) had investigated the water pollution level in three different locations.

Three water samples (W, X and Y) are obtained from the three different rivers all over Malaysia.

Design a laboratory experiment to investigate the water pollution level of the water samples from the three locations. The planning of the experiment should include the following aspects:

• Problemstatement • Hypothesis • Variables • Listofapparatusandmaterial • Experimentalprocedure • Presentationofdata

[17 marks]



SOALAN ULANGKAJI SPM 2012

Biology Jawapan

Biology Paper 1



Biology Paper 2




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Biology Paper 3




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