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FORM TP 2016044

CANDMATE - PI,['-A SE NffTT'.l

PRINT your name on the llnc belowthis b6oklet wlth ydirr answer ilieeldo so mey rcsult in disqurlifiirtion

TEST CODE O12O7O1O

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MAY/JUNE 20I6

CARIBBEAN EXAMINATIONS COUNCILCARIBBEAN SECONDARY EDUCATION CERTIFICATE@

EXAMINATION

BIOLOGY

Paper 0l - General Proficiency

t hour 15 minutes

READ THE FOLLOWING INSTRUCTIONS CAREFULLY.

This test consists of 60 items. You will have t hour and I 5 minutes to answer them.

In addition to this test booklet, you should have an answer sheet.

Each item in this test has four suggested answers lettered (A), (B), (C), (D). Read each item

you are about to answer and decide which choice is best.

On your answer sheet, find the number which corresponds to your item and shade the space

having the same letter as the answer you have chosen. Look at the sample item below.

Sample Item

Which of the following diseases is due toa dietary deficiency? Samole Answer

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(A) Malaria(B) Diabetes(C) Influenza(D) Anaemia

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The correct answer to this item is "Anaemia", so (D) has been shaded.

5. If you want to change your answer, erase it completely before you fill in your new choice.

When you are told to begin, turn the page and work as quickly and as carefully as you can

If you cannot answer an item, go on to the next one. You may retum to that item later.

7. Figures are not necessarily drawn to scale

DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO.

08 JUNE 2016 (p.m.)

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Copyright @ 201 4 Caribbean Examinations CouncilAll rights reserved.

012070t01F 2016

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1 Which of the following features is used

to classify a group of organisms as Class

Insecta?

Living organisms, such as plants, are

affected by abiotic factors which determine

where they become established. Which ofthe following options describes some ofthese determining factors?

3.

(A)(B)(c)(D)

Eleanor collected 13 snails in a 25 cm x

25 cm quadrat. What is the density of the

snail population in a I m2 area?

(A)(B)(c)(D)

SizeShape

ColourNumber of segments

Large fish

Sunlight availabilitY, soil PH,minerals

Parasitism, commensalism,mutualism

Sediment size, shaPe and colour

Deforestation, slash and burn,shifting cultivation

(A)

(B)

(c)(D)2

t352

208832

Item 4 refers to the following diagram of a food web'

L.7

ruNzSmall fish and crustaceans Zooplankton

4. Trophic Level I is represented by

/

-a-

zooplanktonphytoplanktonsmall fish and crustaceans

marine mammals and PeoPle

Phytoplankton

\

f-::;,'",r,:*<-Y#w ,

{F.-o oE.'t-or*-*k1 + rf,t'-Po

(A)(B)(c)(D)

GO ON TO THE NEXT PACE

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Item 5 refers to the following diagram of amushroom.

2cm

5. The organism shown above is a

producerconsumerdetritivoredecomposer

Items 6-7 refer to the following options.

(A) Parasitism(B) Commensalism(C) Mutualism(D) Synergism

For Items 6-7, match each item with one

of the options above.

The relationship between a wild pine and

a Flamboyant tree

The type ofrelationship between leguminous

plant roots and nitrogen-fixing bacteria

6.

7

(A)(B)(c)(D)

ConsumersProducersSun

Inorganicnutrient

pool

Item 8 refers to the following diagram which shows energy flow through an ecosystem.

Heat Eeat

Heat

The energy flow is NOT 100% efficient because energy is

(A)(B)(c)(D)

recycled from plants to the afinospherelost through respiration and excretion

circular, moving in and out of organisms

linear, moving from one organism to the next

8.

GO ON TO THE NEXT PACE

9

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Which of the following is NOT an example

of a renewable energY resource?

(A) oil(B) Wind(C) Solar(D) Biomass

Which ofthe following practices doesNOT

help to conserve the environment?

(A) Overgrazing(B) CroP rotation(C) Reafforrestation(D) Using natural fertilizers

Human activities would have the LEAST

immediate imPact on

(A) coralbleaching(B) eutroPhication(C) overPoPulation

iOl formation of fossil fuels

Which of the following effects of climate

change poses the GREATEST threat to

small islands?

(A) Rising sea level

(B) Ocean acidification(C) lncreased greenhouse gas

(D) Increased global temperature

The GREATEST threats to the survival of

coral reefs are

decreased nitrogen levels

decreased greenhouse gases

i ncreased ocean temPeratures

increased dissolved oxygen levels

Item 14 refers to the following graph of

f,-oputution growth.

0

1A

6lb!Lo

L(u!

z

14.

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Phase 4 of the graph of population groMh

is MOST likelY due to

(A)(B)(c)(D)

disease resistance

high natural birth rate

adequate food and sPace

competition from invasive species

15. A mature plant cell is different from a

mature animal cell because the plant cell

has

(A)(B)(c)(D)

mitochondriaa cell membrane

a large permanent vacuole

a nucleus susPended in the

cytoPlasm

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(A)(B)(c)(D)

GO ON TO THE NEXT PAGE

5

Item 16 refers to the following diagrams.

16. Which of the following options MOST likely identifies the organelles, I and II above?

Nucleus and chloroplastMitochondrion and nucleusMitochondrion and chloroplastNucleus and mitochondrion

uI

(A)(B)(c)(D)

Organelle Function

(A) Ribosomes Sites of protein synthesis

(B) Mitochondrion Air space in the cell

(c) Nucleus Controls movement offats in the cell

(D) Vacuole Site of energy use

17.

18

Which of the following organelles iscorrectly matched with its function?

In a comparison between osmosis and

diffusion, which ofthe following statements

is NOT true?

(A) Osmosis occurs only in livingcells.

(B) Both processes require energyto move particles across aconcentration gradient.

(C) Diffusion sometimes requiresa partially permeablemembrane.

(D) With both processes, moleculesmove from a high concentrationto an area of lower concentration.

Item 19 refers to the following diagramwhich represents a metabolic process

carried out in plants.

Light q4oa

Plant

Food

19. The food produced is

(A)(B)(c)(D)

fatstarchproteinamino acid

Oxygencell

Chlorcphylltn

chloroplasts

GO ON TO THE NEXT PAGE

Item 20 refers to the following diagram

showin g the cross section ofa d icotyledonous

leaf.

Which of the following statements about

the labelled Parts are true?

Rate ofPhotosynthesis

o.o3% co2

Light intensitY

Which of the following statements BEST

accounts for the shaPe ofthe graPh?

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m2l

III

(A) As photosYnthesis rates increase,

there is a decrease in carbon

dioxide levels.

As light intensitY increases, the

rate of PhotosYnthesis also

increases, until a stationarYphase exists, when denaturation

of the enzymes occurs.

As light intensity increases, there

is an increase in PhotosYnthesis,until there is no further increase

in the rate due to some other

limiting factor.As carbon dioxide levels

graduallY increase, there is aii*ilu. increase in the rate ofphotosYnthesis, until a Plateauphase exists where no further

ir"."ut" in carbon dioxideresults in anY funher increase in

photosYnthesis.

20

(B)

(c)

(D)

(A)(B)(c)(D)

I and II onlY

I and lll onlY

II and lll onlY

I, ll and III

Region Function

I Allows maximum sunl ightpenetration throu gh transParent

cells

Allows for transPiration via

cellsII

It Allows for gaseous exchange

vla cells

rlr) r)N Tr) THF- NF,XT PAGE

ttem 2l refers to the following diagram'

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ItemZ2 refers to the following diagram ofa tooth.

m

IV

Which option correctly identifies thestructures labelled l, II, III and IV?

Which of the following conditions are

optimum for the action of salivary amylase?

Item24 refers to the following diagram

I

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Which two food groups should a person

suffering from hypertension and diabetes

limit?

I

II

7)

23

24

(A)(B)(c)(D)

I and IlI and IVII and IIIIII and IV

25 Which of the following can be ingested toprevent osteomalacia or rickets?

CalciumVitamin AVitamin CMagnesium

(A)(B)(c)(D)

I II III IV(A) Crown Enamel Dentine Pulp

(B) Enamel Crown Root Nerve

(c) Enamel Dentine Pulp Capillaries

(D) Dentine Enamel Nerve Capillaries

Temperature('c)

pH Amount of MaltoseProduced (pg)

(A) 20-30 1-2 t2

(B) 30-40 7-8 73

(c) 3H0 9-10 64

(D) 40-s0 7-8 32

GO ON TO THE NEXT PAGE

Corual

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26. Which of the following options correctly

matches the gaseous exchange structures

with the organism?

Which ofthefollowing BEST identifl some

of the transport substances in animals?

Amino acids

HormonesSucroseRespiratory gases

28.

I.II.III.IV.

(A)(B)(c)(D)

I and ll onlyI and IV onlyII and III onlY

I, II and IV only

21. The role of respiration is BEST described

release of energY

absorption ofoxYgenbreakdown of carbohYdrates

liberation of carbon dioxide

as the

(A)(B)(c)(D)

Human Fish Plant

(A) Trachea Mouth Stems

(B) Alveoli Gill filaments Large leaves

(c) Alveoli Gill rakers Young leaves

(D) Trachea Cillbars Spongymesophyll

Item 29 refers to the following diagram of a human heart'

I

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29 Which of the following options correctly identifies the structures labelted I' II' III and IV?

I u ru IV

(A) Aorta Pulmonary artery Pulmonary vein Bicuspid or Mitralvalve

(B) Pulmonary artery Posterior vena cava Aorta Bicuspid or Mitralvalve

(c) Aorta Pulmonary vgtn_ Pulmonary Semi-lunar valve

(D) Pulmonary vein Pulmonary artery_ Anterior vena cava id valve

GO ON TO THE NEXT PAGE

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30.

31

32

33

(B)

(D)

(c)

An Amoeba obtains all the oxygen it needsby diffusion via its cell membrane, whilea human needs to have special respiratorysurfaces for this purpose. The BEST reasonfor this difference is that

(A)

Which of the following options correctlymatches the storage organs to their storednutrients?

The BEST description of the role ofexcretion in living organisms is to

(A) produce urine(B) produce faeces(C) get rid of toxic waste(D) get rid of excess water

Item 36 refers to the following diagram ofa mammalian kidney nephron.

I

II

UI

Which option correctly identifies thefunctions of the parts labelled I, II and III?

the Amoeba does not require muchoxygen

oxygen cannot pass through theskin of a human

a human requires a larger volumeofoxygen

a human's surface area to volumeratio is too small for diffusion tobe effective

34.

35.

36

The essential vitamin and mineral saltrequired for blood clotting in humans are

(A) A and Mg2*(B) C and K*(C) B and Na"(D) K and Ca2*

Under which conditions will the rate oftranspiration in plants be HIGHEST?

(A) Sunny and low wind speed(B) Sunny and high wind speed(C) Cloudy and low wind speed(D) Cloudy and high wind speed

Translocation of sucrose in plants occursvia specialized vessels which

(A) are dead, narrow cells(B) are abundant in mitochondria(C) contain sieve pores in their end

walls(D) are thin, hollow tubes of lignin

Roots Fruits Liver(A) Starch Sucrose Glycogen

(B) Starch Fructose Glucose

(c) Proteins Glucose Fats

(D) Fats Glucose Glycogen

I II UI(A) Ultrafiltration Water

conservationSelectivereabsorption

(B) Ultrafiltration Selectivereabsorption

Under theinfluence ofADH

(c) Waterconservation

Under theinfluenceofADH

Urineproduction

(D) Selectivereabsorption

Ultrafiltration Under theinfluence ofADH

GO ON TO THE NEXT PAGE

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37.

38

39

Which of the following organs does the

mammalian skeleton Protect?

(A) Stomach(B) Pancreas(C) Bladder(D) Duodenum

Which ofthe following correctly describesmovement in plants?

(A) Irreversible, whole or partmovement

(B) Reversible, whole or partmovement(C) Irreversible, growth or part

movement(D) Reversible, growth or part

movement

Which of the following options BESTdescribes the terms 'stimulus' and'response'?

Item 40 refers to the following diagram

Which of the following options correctlyidentifies the structures labelled I, ll andIII above?

Item 41 refers to the following diagram ofthe skin.

IV

The region which acts in a similar mannerto SPF (Sun Protection Factor) creams is

UI

40.

IIIg

I

II

III

(A)(B)(c)(D)

I

IIIIIIV

I II trI(A) Receptor Relay nerve Effector

(B) Skin Intermediatenerve

Muscle

(c) Sensorynerve

Spinal nerve Effector

(D) Receptor Spinal nerve Effector

Stimulus Response

A( ) A deliberateprovocation ofan organism

The movement of an

organism

(B) An organism'sexposure tosunlight

The growth of theorganism away fromlight

(c) A wave ofexcitement in anorganism

Locomotion of theorganism

(D) A detectablechange in an

organism'senvironment

An organism'sreaction to a stimulus

41.

(.}r) r)N TO THtr- NEXT PAGE

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42.

43

(A)(B)(c)(D)

Item 43 refers to the following diagramwhich illustrates a measurement of growthin living organisms.

Which of the following is an INCORRECTlabel for the y-axis?

The function of the choroid layer in the eyeis to

45. Contraception is used PRIMARILY to

(A) limit the size of families(B) cause infertility in humans(C) prevent the spread of sexually

transm itted infections(D) increase the world's population

46. Where does fertilization of the egg cell orovum occur in flowering plants?

(A) Stigma(B) Endosperm(C) Pollen grain(D) Embryo sac

Item 47 refers to the following diagram ofa flower.

47 Which of the labelled parts is responsiblefor the production of male gametes?

I

IIIIIIV

focus most light raysprevent internal refl ectionmaintain the shape of the eyeballcontrol the amount of light entering

the eye

LengthMassNumber of leavesUnits of time

Repair of the uterus liningOvulationShedding of the uterus liningDevelopment of the Graafian

follicle

I

II(A)(B)(c)(D)

I.II.III.IV

ilI

IVItem 44 refers to the following activitiesinvolved in the menstrual cycle.

(A)(B)(c)(D)Which of the following is the correct

sequence of activities?

(A) l, II, IIl, IV(B) II, I, III, tV(C) IV, I, II, III(D) rY III, Il, I

44.

GO ON TO THE NEXT PAGE

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48. A vector is defined as an organism that 50

bites humanscauses diseases

lives on other organismstransmits disease organisms

Which of the following organisms transmits

the yellow fever virus?

Which of the following are used in the

management of diabetes?

(A)(B)(c)(D)

I.IIIII

DietExerciseMeditation

49

(A) I and Il onlY(B) I and III onlY(C) Il and III onlY(D) I,ll and III

(A) Culex(B) Tsetse

(C) Anopheles(D) Aedes aegtPti

51 Which of the following options correctly describes DNA, chromosome, gene and allele?

DNA Chromosome Gene Allele

(A) Deoxyribonucelic acid DNA + histamine Unit that codes for a

specific protein

An alternate form of agene

(B) Unit that codes for a

specific protein

An alternate form ofa gene

DNA + protein Histone

(c) Nucleic acid that has allgenetic information

DNA + histone The smallest unit ofinheritance

An altemate form of agene

(D) Nucleic acid that has all

genetic information

The smallest unit ofinheritance

Unit that codes for a

specific prglgrn_DNA + protein

As a result of mitosis each daughter cell

has

Tarzan and Jane, both of whom are

heterozygous for Blood Groups A and B

respectivety can have offspring that are

likely to be

(A) 100% AB(B) 50Yo A: 50Yo AB(C) 25%o AB: 50Yo B:25Yo O(D) 25o/o A:25YoB:25%o AB:25o/oO

5352.

(A)(B)

a variable number of chromosomes

twice the number of chromosomes

as the Parentthe same number of chromosomes

as the Parenthalf the number of chromosomes

as the parent

(c)

(D)

GO ON TO THE NEXT PAGE

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54.

56.

Zane, the son of Tarzan and Jane, mayhave inherited the red-green colour-blindness gene from his parents. NeitherTarzan nor Jane is colour-blind. If Nrepresents the allele for normal vision, andn represents the allele for colour-blindness,the genotypes of the parents would MOSTlikely be

Tazan Jane(A) XNY XNxn

(B) X,Y xNxo(c) x.Y XnXn

(D) XNY XnXn

55. Variation in populations is due to

I. mutationll. crossing overlll. asexualreproductionIV. random segregation

Which ofthe following is true about naturaland artifi cial selection?

Which of the following is an ecologicalimpl ication of genetic engineering?

(A) Loss of biodiversity(B) Humans'playingCod'(C) Higher prices for organic foods(D) Reduced incidence of allergic

reactions

Which of the following describes theprocess of genetic engineering?

(A) Tissue sample is treated to promotegrowth of cells.

(B) Stem cells are grown and used totreat medical problems.

(C) Chromosomes from an egg cell arereplaced by the nucleus from asomatic cell.

(D) A gene is inserted into a vectorwhich is then used to transfer thegene to a host cell.

58.

59

60

(A)(B)(c)(D)

(A)(B)(c)(D)

Variation is important to populationsbecause it ensures

I, II and III onlyI, II and IV onlyII, III and IV onlyI, II, III and IV

diversityconformityadaptabilityabnormality

57. Speciation may be due to

I. geographical isolationII. behaviouraldifferencesincourtshipIII. mutation

(A) I only(B) I and Il only(C) Il and III only(D) I, II and III

END OF TEST

IF YOU FINISH BEFORE TIME IS CALLED, CHECK YOUR WORK ON THIS TEST.

Natural Selection Artificial Selection

(A) Occurs indomestic populations.

Occurs in naturalpopulations.

(B) Involves genetic modi-fication.

Largely controlled bythe environment.

(c) Environment acts onthe population whichadapts.

Selective breeding fora particular trait.

(D) Faster process. Slower process.

012070t0tF 2016