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126 SOALAN ULANGKJI SPM 2012

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Biology

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

Chaper 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. Inroducion oBiology

F 2. Cell Sruc. and CellOrg.

4 2 1 2 0.5 4 1 4 1

O 3. Movemen o Sbsacr Pl. Mbr

2 1 3 1 1 5 0.5 3 1 4 1

R 4. Chemical Comp. o

he Cell 3 3 3 1 2 1 3 1M 5. Cell Division 3 1 2 1 2 1 0.5 3

6. Nuriion 8 1 8 1 7 1 1 6 1 5 0.5 0.5

4 7. Respiraion 3 1 1 3 6 1 5 1 3 0.5

8. Dynamic Ecosysem 5 1 3 1 3 1 5 1 4 0.5

9. EndangeredEcosysem

3 1 3 1 4 2 1 3 1

No. o quesion or 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 0

F 10. ranspor 4 5 1 5 1 3 1 3 1

O 11. Locomoion and

Suppor 1 5 1 1 1 1 5 1R 12. Coordinaion and

Response6 1 1 4 1 5 4 1 4 1

M 13. Reproducion &Growh

5 5 1 5 1.5 8 3 1

14. Inheriance 2 1 2 1 1 1 3 5 0.5

5 15. Variaion 2 2 1 0.5 3 0.5 1 0.5

No. o quesion or 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 1

OAL 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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Diagram1

Biology Paper 1 [4551/1]

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

Wha is he use o srucure W?A Excreion C ReproducionB Locomoion D Osmoregulaion

2. Te ollowing inormaion shows he cell organizaion inmulicellular organisms.

Which is an example o X?

3. Diagram 2 shows a process carried ou byAmoeba sp.

Diagram2

Wha is he process?A Osmoregulaion C PhagocyosisB Binary ssion D Diusion

4. Diagram 3 shows he specialisaion o plan cells ormingissue P.

Diagram3

Wha is issue P?A Epidermis C Palisade mesophyll

B Xylem D Phloem

5. Diagram 4 shows a plan cell immersed in a hyperonicsoluion.

Which o he ollowing shows he plan cell aer i has been

ranserred o a hypoonic soluion or 10 minues?

6. Diagram 5 shows he condiion o an onion cell aer beingimmersed in a soluion.

Wha is he phenomenon?

A urgid C CrenaionB Plasmolysis D Deplasmolysis

Diagram5

Cell issue Organ X Mulicellular organism

Diagram 4

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7. Diagram 6 shows a model o he plasma membrane.

Diagram6

Wha is Y?A Choleserol C Pore proeinB Phospholipid D Carrier proein

8. Diagram 7 shows he iniial and nal sages o an experimen.

Diagram7

Wha causes he ormaion o sucrose soluion in he caviyo he poao?A Sucrose soluion rom he poao moved ino he caviy

by diusionB Sucrose molecules rom he caviy moved ino he

poao by diusionC Waer molecules rom he disilled waer moved ino

he caviy by osmosisD Waer molecules rom he disilled waer moved ino

he poao by osmosis

9. Diagram 8 shows he acion o an enzyme on a subsrae.

Diagram 8

Wha are X, Y and Z?

10. Diagram 9 shows Muhus shir wih a blood sain beore andaer being washed wih an enzyme conaining deergen.

Before

Bloodstain

After

Diagram9

Which is he mos suiable enzyme and emperaure o givehe resul shown?

11. Diagram 10 shows one o he levels o proein srucures.An example o a proein having he above proein srucure isA silk C hormoneB kerain D haemoglobin

Diagram 10

Diagram 11

Diagram 12

12. Diagram 11 shows a sage in one o he phases in meiosis.Wha is he imporance o X?

A Replace dead cells.B Variaion among he spesies.C Mainains diploid chromosome number in a zygoe.

D Causes geneically idenical rom he paren cell o nexgeneraion

13. Diagram 12 shows a cell undergoing sage P o miosis.

Wha is sage P?A Prophase

B MeaphaseC AnaphaseD elophase

X Y Z

A Enzyme Enzyme -subsrae complex

Producs o hereacion

B Subsrae Enzyme -subsrae complex

Producs o hereacion

C Producs o hereacion

Enzyme Enzyme -subsrae complex

D Producs o hereacion

Enzyme -subsrae complex

Enzyme

10. Diagram 9 shows Muhus shir wih a blood sain beore andaer being washed wih an enzyme conaining deergen.

Enzyme emperaure

A Proease 18oC

B Proease 37oC

C Lipase 18oC

D Lipase 37oC

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Diagram 13

14. Diagram 13 shows a diploid cell. Tis cell is undergoingmeiosis.

I one o he homologous chromosome pairs does noseparae during Meiosis I, how many chromosomes can beound in he gamees?

A 8 B 4 C 5 D 7

15. able below shows he ypes and quaniy o ood aken by aMarina in a day.

Te oal energy obained by he Marina isA 4900 kJ C 6300 kJB 6100 kJ D 6500 kJ

16. Diagram 14 shows par o he human digesive sysem.

Diagram

Diagram 14

A paien is suering rom disease o organ P and he paiensorgan P was removed by surgery. Which o he ollowingype o ood has o be reduced by he paien?A Bread C MangoB Biscui D Margarine

17. able below shows he average volume o soluions R, S, and U needed o decolourise 1ml o DCPIP soluion.

Which o he soluion conains he lowes ascorbic acid

conen?A R B S C D U

18. Diagram 15 shows an experimen se-up o invesigae acorswhich aec he rae o phoosynhesis.

Diagram 15

Which o he ollowing will increase he rae ophoosynhesis in he experimen?

A Using a waer bah a 600 CB Placing a 100W bulb 20 cm rom he HydrillaC Using 0.1% sodium hydrogen carbonae soluionD Replacing he Hydrilla wihElodea

19. Diagram 16 shows a child suering rom a disease.

Te child suers he disease because he lacks

A viamin C proeinB bre D carbohydrae

20. Diagram17 shows he arrangemen o equipmen required omeasure he gaseous conen o air.

Diagram 17

Wha is he percenage o oxygen conen in he exhaled air?A 4.2 % B 8.5 % C 11.0 % D 21.0 %

ypes o oods Quaniy/g Energy/kJ per 100g

Rice 150 2000

Poaoes 50 3000

Milk 200 300

Bee 150 800

Diagram 16

Lengh o exhaled air column = 10.0 cmLengh o exhaled air column aerreamen wih poassium hydroxide = 9.6 cmLengh o exhaled air column aerreamen wih poassium pyrogallae = 8.5 cm

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21. Diagram 18 shows he longiudinal secion o horax viewedrom he side.

Diagram 18

During he breahing process, which o he ollowing occurswhen he diaphragm is shaped as in diagram 18?

22. Diagram 19 shows he apparaus se up o invesigae heaciviy o yeas.

Wha can be observed aer 30 minues?

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

23. A armer carries ou an experimen o esimae he snailpopulaion in a arm. Te armer capures 90 snails and

marks he snails beore releasing hem. Aer a week, hearmer caches some snails again, 20 are marked and 50 areunmarked. Wha is he esimaed snail populaion in hearm?A 126 C 425B 315 D 530

24. A ormer mining ground can orm a primary ores. Whicho he ollowing sequence is correc in he ormaion o heprimary ores?A Successor, climax communiy, pioneer

B Pioneer, climax communiy, successorC Successor, pioneer, climax communiyD Pioneer, successor, climax communiy

Diagram 19

25. Which o he ollowing are adapaions by he Sonneratia sp.o be able o grow in he mangrove swamp?I Tick and succulen leavesII ViviparyIII Butress roosIV High osmoic pressure in he cell sap

A I and II C I, II and IIIB I and III D I, II and IV

26. Diagram 20 is a graph which shows changes in hepopulaion o wo species o beeles, P and Q, over a periodo ime. Boh species eed on he same ood source.

Wha is he iner-relaionship beween species P and Q?A Symbiosis C ParasiismB Predaion D Compeiion

27. Niraes and phosphaes rom armland ha fow ino a lake

caused rapid growh o algae.Wha is described by he above siuaion?A Europhicaion C Ferilizer accumulaionB Pesicide polluion D Colonisaion

28. In an experimen o deermine he Biochemical Oxygen

Demand, a sample o lake waer was ound o have a highBOD value. Wha does he above siuaion ell?A Te waer is no polluedB Te number o aquaic organism is highC Te waer has a high oxygen conenD Microorganisms are abundan

29. Diagram 21 shows a human aciviy.

Which o he ollowing is he eec o he above aciviy?A Decrease in B.O.D. valueB Increase he habia o he auna

C Decrease he emperaure in Norh PoleD Increase he carbon dioxide level in he amosphere

Diagram 21

Exernal inercosalsmuscles

Ribcage Movemeno air

A Relax Moves downwardsand inwards

Air is orcedou o he lungs

B Relax Moves upwardsand ouwards

Air is orcedou o he lungs

C Conrac Moves downwardsand inwards Air is suckedino he lungs

D Conrac Moves upwardsand ouwards

Air is suckedino he lungs

Diagram 20

Populaion

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30. Diagram 22 shows a longiudinal secion o he human hear.

Which o he labelled pars A, B, C and D pumps blood ohe lungs?

31. Diagram 23 shows a cross secion o a par o adicoyledonous plan. Which labelled par uncion oranspor waer and mineral ions?

32. Diagram 24 shows a blood circulaory sysem. Wha is hisype o he blood circulaory sysem?

A Open circulaory sysemB Double circulaory sysemC Single, closed and complee circulaory sysemD Single, closed and incomplee circulaory sysem

33. Diagram 25 shows a human verebra. Wha is srucure X?

A CenrumB ransverse process

C Spinous processD ransverse oramen

Diagram 22

Diagram 23

Diagram 24

Diagram25

Diagram 25

34. Diagram 26 shows human elbow join. Which o he parslabelled A, B, C and D absorbs shock during movemen?

35. Diagram 27 shows he figh muscles in a bird.

Wha are he acions o muscles X and Y in a downsrokemovemen o he wings?

36. Diagram 28 shows some human bones. Which bone is paro he axial skeleon?

37. Diagram 29 shows an aquaic plan. Wha helps his plan ofoa?

A Parenchyma cells C Collenchyma cellsB Aerenchyma cells D Schlerenchyma cells

Diagram27

Diagram 27

Diagram 26

Diagram29

Diagram 29

X Y

A Relax Relax

B Relax Conrac

C Conrac Relax

D Conrac Conrac

Diagram 28

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38. Diagram 30 shows he srucure o human brain. Which ohe pars labelled A, B, C and D conrols body balance?

39. Diagram 31 shows he dieren endocrine glands in ahuman. Which gland labelled A, B, C or D is known as heMaser gland?

40. Diagram 32 shows a par o he nephron. Wha processhappens a X?

A Reabsorpion C Ulrafiraion

B Secreion D Ulrasecreion

41. Diagram 33 shows he emale reproducive sysem.

Which o he pars, A, B, C or D is he place whereimplanaion occurs?

Diagr

Diagram 30

Diagram 31

Diagram32

Diagram 32

Diagram 33

42. Diagram 34 shows he changes in he hickness o he ueruswall during he mensrual cycle.

When is ovulaion mos likely o occur?A W B X C Y D Z

43. Diagram 35 shows he sages in he developmen o a olliclein he ovary o human.

Wha hormone is produced by Q?A Progeserone C Follicle simulaing hormoneB Esrogen D esoserone

44. Diagram 36 shows a growh curve o a balsam plan.

Which o he ollowing deducion is true rom he graph?A Te growh is slowes rom X o Y.B Te ases rae o growh occurs rom V o W.C Tere is rapid growh rom Y o Z due o mauraion.D Te decrease in growh rom U o V is due o respiraion.

Diagram 34

Diagram35

Diagram 35

Diagram36

Diagram 36

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45. A homozygous rounded yellow seed pea is crossed wih awrinkled green seed. Rounded seed is dominan o wrinkledseed while yellow seed is dominan o green seed. woprogenies rom he rs generaion (F1) are crossed wih oneanoher. Wha is he phenoypic raio o he secondgeneraion (F2)?

A All round seedsB 3 round yellow : 1 wrinkle greenC 9 round yellow: 3 round green : 3 wrinkle yellow: 1

wrinkle greenD 1 round yellow: 1 round green: 1 wrinkle yellow: 1

wrinkle green

46. Diagram 37 shows he ormaion o an ovum in human.

Male somaic cell wih 44 + XY chromosomes orms woypes o sperms, one wih sex chromosome X and he oherone wih sex chromosome Y.

Te sperm wih sex chromosome Y erilises an ovum.

Wha is he combinaion o chromosomes in he zygoeormed?A 22 + XX C 44 + XXB 22 + XY D 44 + XY

47. Wha ype o chromosomal muaion is shown inDiagram 38?

A DeleionB Inversion.C Duplicaion.

D ranslocaion.

Diagram37

Diagram 37

48. Diagram 39 shows he karyoype o an ospring ha hasundergone muaion.

Te ospring suered a geneic disease. O he ollowing,which is a characerisic o he ospring suering rom hisgeneic disease?

A InelligenB Webbed neckC Feminine characerisicsD Widely spaced and slaned eyes

49. A woman wih blood group A claims ha a man wih bloodgroup AB is he aher o her baby. Te babys blood is esed.

Which o he ollowing could be he babys blood group?

I Group AII Group BIII Group O

IV Group AB

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

50. Te weigh o each suden in Form 5 Berdikari is measured

and recorded. Which o he ollowing shows he variaion inweigh o sudens in Form 5 Berdikari?

Diagram 39

Diagram 38

A C

B D

END OF QUESION PAPER

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Section A[60 marks]

Answer all quesions in his secion.

1. Diagram 1 shows some specialised cells and issue.

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

W : ___________________________________________________________________Y : ___________________________________________________________________ [2 marks]

(ii) Sae one uncion o cell W and issue Y.

Cell W : _______________________________________________________________issue Y : _______________________________________________________________ [2 marks]

(b) (i) Name he sysem which consis cell Z.______________________________________________________________________ [ 1 mark ]

(ii) Explain one role o cell Z in he sysem named in (b)(i).______________________________________________________________________ [2 marks]

(c) Explain one characerisic o issue X o aciliae waer absorpion rom soil.______________________________________________________________________ [2 marks]

(d) Herbicide is capable o sop he ransporaion o some mineral ino a plan hrough issue X.Explain why.__________________________________________________________________________________________________________________________________________________________________________________________________________________ [3 marks]

Diagram 1

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2. Diagram 2.1 shows 2 sages in a cell cycle ha occur in an animals skin.

(a) (i) Sae he ype o cell division involved in he cell cycle.______________________________________________________________________ [ 1 mark ]

(ii) Sae one reason or your answer in (a)(i).____________________________________________________________________________________________________________________________________________ [ 1 mark ]

(b) (i) Explain he chromosomal behaviour in sage Q.____________________________________________________________________________________________________________________________________________ [2 marks]

(ii) Sae he imporance o he chromosomal behaviour in menioned in (b)(i).

______________________________________________________________________ [ 1 mark ]

(c) Somaic cells o he animal has our chromosomes. In Diagram 2.2, draw and label a diagram showing he chromosomalbehaviour aer sage P. [3 marks]

(d) (i) A armer wans o breed a good variey o pineapple plans or commercial producion.Sugges a suiable mehod o be used which involved he cell cycle in Diagram 2.1.____________________________________________________________________________________________________________________________________________ [ 1 mark ]

(ii) Explain how he mehod named in (d)(i) can increased he crop yield.__________________________________________________________________________________________________________________________________________________________________________________________________________________ [3 marks]

Diagram 2.1

P Q

Diagram 2.2

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3. Diagram 3 shows a pond ecosysem.

(a) Bioic and abioic componens infuence he lives o organisms in Diagram 3.Name 2 bioic componens and 2 abioic componens which infuence he ecosysem in Diagram 3.

Bioic componens: _________________________________________________________Abioic componens: ________________________________________________________ [2 marks]

(b) (i) Based on he Diagram 3, consruc a ood chain consising ofour rophic levels.______________________________________________________________________ [ 1 mark ]

(ii) Based on consruced ood chain in (b)(i) consruc a pyramid o numbers.

[2 marks]

(iii) An organism in he hird rophic level in he ood chain you have consruced in (b) (i) has decreased in numbers.Sugges a way o increase he number o his organism.

____________________________________________________________________________________________________________________________________________ [ 1 mark ]

(c) (i) Te organisms in he rs rophic level absorbs 15 000kJ solar energy. Energy loss a each rophic level is 90%.

Calculae he oal energy ranserred o he organisms in he hird rophic level.

= ______________kJ[2 marks]

(ii) Sae two ways in which energy may be los in he ood web.1. __________________________________________________________________2. __________________________________________________________________ [2 marks]

(d) Many problems relaed o he environmen are he resuls o human aciviies.Explain one bad eec o he aciviies on he ecosysem____________________________________________________________________________________________________________________________________________ [2 marks]

Diagram 3

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4. Diagram 4.1 shows he regulaion o specic hormones owards he developmen in he ovary.

(a) (i) Name hormone P and sae is uncion.____________________________________________________________________________________________________________________________________________ [2 marks]

(ii) Explain why an imbalance o hormone W and Q can cause he disrupion o he ovulaion process.

____________________________________________________________________________________________________________________________________________ [2 marks]

(iii) Explain he relaionship beween srucure Y and he level o hormone X rom he 16h o 28h day.____________________________________________________________________________________________________________________________________________ [2 marks]

Diagram 4.1

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Diagram 4.2 shows a human oeus in his mohers uerus.

(b) Sae he imporance o fuid M. _______________________________________________________________________________

______________________________________________________________________________________________________________________________________________________________

[ 1 mark ]

(c) In he 16h week, a pregnan moher was ineced wih a disease. Te inecion caused srucure N o sopuncioning. Te moher miscarriaged. Explain his saemen.

_______________________________________________________________________________

______________________________________________________________________________________________________________________________________________________________[2 marks]

(d) Human chorionic gonadorophin hormone (HCG) has a similar role o lueinizing hormone (LH). A wie has aproblem conceiving due o he ailure in ovulaion. Te wie becomes pregnan aer a docor has given herinjecions o HCG.

Based on above saemen, explain how HCG injecions enable he process o pregnancy. _______________________________________________________________________________

______________________________________________________________________________________________________________________________________________________________

[3 marks]

Diagram 4.2

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5. Diagram 5.1 shows he human karyoype or individual P and Q, and he gamees ha can be produce hrough process X.

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

(b) (i) Sae he oal chromosome number in a somaic cell or individual P and individual Q.______________________________________________________________________ [ 1 mark ]

(ii) Sae one dierence beween individual P and Q.

______________________________________________________________________ [ 1 mark ]

(c) (i) Gamee M and N are gamees produced hrough process X.Complee Diagram 5.1 o show he number and ype o chromosomes inheried by gamee M and N.

[2 marks]

(ii) Sae wo characerisics o individual P.1. _____________________________________________________________________2. _____________________________________________________________________ [2 marks]

(d) Colour blindness is a sex-linked disease. Diagram 5.2 shows he inheriance o colour blindness in a amily.

(i) Complee he diagram 5.2 o show he inheriance o colour blind in he amily. [3 marks](ii) Based on your answers in (c)(i), sae he percenage o heospring ha would suer rom colour blindness.

______________________________________ [ 1 mark ]

(iii) Name anoher example o sex-linked disease.______________________________________ [ 1 mark ]

Diagram 5.1

Diagram 5.2

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Section B[20 marks]

Answer anytwo quesions.

6. (a) (i) Diagram 6.1 shows he ormaion o glomerular lrae in process Y during urine ormaion.

Base on Diagram 6.1; describe briefy he ormaion o he glomerular lrae. [ 4 marks ]

(ii) En. Hamzah was inormed by his docor ha his le kidney ail o uncion. By using your biology knowledge,explain he eec o his kidney ailure on his healh and give a suggesion o overcome his problem.

[ 6 marks ]

(b) able 6.2 shows he concenraion o solues in he blood plasma, glomerular lraion and urine o an adul.

Base on he able 6.2; explain why he concenraion o solues in he plasma, glomerular lraion and urine ohe adul are dieren. [10 marks]

Diagram 6.1

able 6.2

SoluteConcentration o solutes (g/dm3 )

Blood plasma Glomerular fltrate Urine

Glucose 1.0 1.0 0.0

Amino acid 1.5 1.5 0.0

Protein 80.0 0.0 0.0

Urea 0.3 0.3 20.0Sodium ion, Na+ 3.2 3.2 1.6

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7. Diagram 7.1 shows cell P and issue Q. P is a unicellular organism whereas Q is ound in a mulicellular organism.

(a) (i) Based on Diagram 7.1, explain he cellular respiraion process ha occurs in he ollowing condiions: [4 marks] RespirationoccursinPduringfermentation

RespirationoccursinQduringwalking

(ii) Explain he imporance o increased pulse rae during vigorous aciviy and why i akes several minues or hepulse rae o reurn o normal aer he aciviy. [6 marks]

(b) Diagram 7.2 shows he respiraory organs o a sh and a human.

M and N are srucures which are adaped o uncion in heir respecive habias. Compare and explain he adapaions.[10 marks]

Diagram 7.1

M

Diagram 7.2

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8. Diagram 8 shows he assimilaion o digesed ood in he organ and body cell.

a) Based on Diagram 8, explain he assimilaion o he ollowing ypes o ood :(i) glucose(ii) amino acids(iii) lipids [10 marks]

b) Energy requiremen or a girl aged 15 is 9000 kJ daily. able below shows ypes o ood, quaniy and energy conen o her

daily menu.

Calculae he oal energy value aken by he girl daily. I she coninues o ake he menu everyday or a long ime, explainhe consequences o he habi o her healh.

[10 marks]

Diagram8

Diagram 8

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9. Diagram 9.1 shows he europhicaion process ha occurs o a lake due o he human aciviies.

(a) Based on he Diagram 9.1, explain wha is mean by `europhicaion`.[10 marks]

(b) Explain how each o he ollowing can reduce waer polluion:(i) reaing sewage(ii) Using organic erilizers raher han inorganic ones.

[6 marks]

(c) Diagram 9.2 shows an aciviy carried ou wih he inenion o build a housing esae in he area.

Explain how he above aciviy can cause fash food o he area.[4 marks]

Diagram9.1

Diagram 9.1

Diagram 9.2


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1. Diagram 1 shows an experimen se-up o invesigae he rae o ranspiraion o a plan under dieren ligh inensiy. A hebeginning o he experimen, he leay shoo is placed a a disance o 50 cm rom he ligh source (able lamp). Te ime akenor he air bubble o ravel a disance o 10 cm is recorded. Te experimen is repeaed by puting he leay shoo a a disance o40 cm, 30 cm and 20 cm rom he ligh source. Te resuls o he experimens are shown in able 1.

Diagram 1

(a) Record accuraely he ime aken or he air bubble o ravel a disance o 10 cm or he dieren disance o he leay shoo romhe ligh source in able 1.

[3 marks]

able 1

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(b) (i) Based on able 1, sae wo dieren observaions.

Observaion 1:___________________________________________________________________________________________________________________________________________________________________________________________________________________________

Observaion 2:__________________________________________________________________________________________________________________________________________________

_________________________________________________________________________[3 marks]

(ii)Sae he inerences which correspond o he observaion in 1(b)(i).

Inerence rom observaion 1:__________________________________________________________________________________________________________________________________________________

_________________________________________________________________________

Inerence rom observaion 2___________________________________________________________________________________________________________________________________________________________________________________________________________________________

[3 marks]

(c) Complee able 2 based on his experimen.

[3 marks]able 2

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(d) Sae he hypohesis or his experimen.______________________________________________________________________________________________________________________________________________

_______________________________________________________________________ [3 marks]

(e) (i) Based on able 1, consruc a able and record all he daa colleced in he experimen.Your able should have he ollowing iles:

Distanceofleafyshootfromlightsource

Lightintensity

Timetakenfortheairbubbletotraveledadistanceof10cm

Rateoftranspiration

Use he ormula:

Rae o ranspiraion = Disance raveled by air bubble (cm) /ime aken (min)

Ligh inensiy = 1/disance (cm)

[3 marks]

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(ii) Use a graph paper o answer his par o he quesion. Using he daa in 1e (i), draw a graph o he rae oranspiraion agains ligh inensiy.

[3 marks]

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() Based on he graph in 1e (ii), explain he relaionship beween ligh inensiy and rae o ranspiraion._______________________________________________________________________________________________________________________________________________________________________________________________________________________________________

[3 marks]

(g) Based on he resuls o he experimen, sae he operaional deniion or rae o ranspiraion?_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________

[3 marks]

(h) I he leay shoo placed a a disance o 50 cm is repeaed bu he suraces o he leaves o he plan are covered wihvaseline, predic he rae ranspiraion. Explain your predicion._______________________________________________________________________________________________________________________________________________________________________________________________________________________________________

[3 marks]

(i) Caegorise all he maerials and apparaus labeled in Diagram 1 in able 3.

able 3

[3 marks]

Materials Apparatus

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2. Due o numerous complains received rom residens abou waer polluion in rivers all over Malaysia, he Deparmen oEnvironmen (DOE) had invesigaed he waer polluion level in hree dieren locaions.

Tree waer samples (W, X and Y) are obained rom he hree dieren rivers all over Malaysia.

Design a laboraory experimen o invesigae he waer polluion level o he waer samples rom he hree locaions. Teplanning o he experimen should include he ollowing aspecs:

Problemstatement

Hypothesis

Variables

Listofapparatusandmaterial

Experimentalprocedure

Presentationofdata

[17 marks]


q_bio_2012

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