224716414-CSEC-Biology-January-2013-P1.pdf

CSEC Biology January 2013 P1 Items 1-2 iefer to the following food chain which shows the feeding ielationships ill a freshwater habitat

3.

Some fungi are said to be decomposers becsuse they (A)

Microscopic -+ Mosquito -+ Small - Large

Alga I.

Larva

Fish

Fish

(B)

The organism to which the LEAST amount of energy is available is the

(C)

(D) (A) (B)

(CJ (D)

2.

large fish small fish mosquilO larva microscopic alga

4.

The GREATEST number of individuais ill the food chain would be the

Bacteria play an important role in the cyclillg ofnitrogen. Which ofthe following organisms is NOT a part of this cycle? (A) (B)

(A) (B) (C) (D)

large fish small fish mosquilO larva micrescopic alga

have no chlorophyll and cannot . make their own food depend on dead organisms as a source of nutrientB break down the bodies of dead organisms to simple substances use plant and animal materials to make chemicals

(C) (D)

Nitrobacter Nitrosomooas Rbizobium Streptococcus

Item 5 iefers to the following diagrams showing beaks and feet offour birds found in the Caribbean.

[[

5.

lil

IV

Wbi~h bird is BEST adapted to feeding on fish in a swamp? (A) (B)

(C)

I ll Ill

(D)

IV

/

j

'i

- 3-

men

Item 6 to the following diagnms of different structures taken &om plants and animals. I.

Items 7-3 refer to the diagram below. ---Cucumber

..~ .

S?::;:

Coacentrated silt solution

L-~====-:!_=j---W•tu 7.

n.

The process being investigated is (A) (B) (CJ

(D)

8.

diffusion osmosis translocation active transport

Which diagram BEST illustrates the levels of the liquids if the apparatus is left undisturbed for one hour?

(A)~

Ill

~'

(8)~ IV.

'"~ 6.

Which of the above structures is NOT a tissue? (A) (B)

I II

(CJ

Ill

(D)

IV

·~

(D)~

9.

Which of the following pairs of organisms possesses !he characteristics for making carbohydrates froin inorganic materials? (A) (B)

(CJ (D)

13.

Algae and 6owering plants Fungi and flowering plants Bacteria and fungi Vuuscs and algae

Which of the following statements are true about the suitability of leaves for photosynlhcsis? I.

They an: broad and 6at and olfer a large surface irca for absorption ·· of sunlight and carbon dioxide.

II.

Tbeie an: many pon:s on the lower surfaccnfthclcafto permitrapid exchange of gases. There is a branching network of veins to provide a ready supply of water. There are often more chloroplasts in the upper cells oflhc leafthan the lower tells which receive less sunlight

Item 10 refers to the following diagram which shows organisms in a garden.

m.

a&

rv.

~~~ 10.

(A) (BJ (CJ

The organisms which show hctcrotropbic and autotropbic nutrition respectively are

(D)

Heterotrophlc

Autotropbic

(A) (B)

grass tree trunk

mushroom grasshopper

(CJ

grasshopper grass

grass tree trunk

(D)

11.

The process which moves food through the alimeoWy canal is called (A) (B) (CJ (D)

12.

peristalsis digestion mastication swallowing

Absorption of amino acids takes place in the

(C)

duodenum stomach ileum

(D}

colon

(AJ (B)

I and II only III and rv only ~ II and monly I, II, ill and IV

.lill!!...li refers to the following graph which shows levels of the pH io the alimeoWy canal.

I

m

IV

u l'tloutb.

14.

Small intestiua

Which point io the graph MOST likely indicates the presence of hydrochloric acid in the alimenWy canal? I

(AJ (BJ

[[

(C}

Ill

(D)

[V

• 5•

mm to the following apparatus used in an investigation.

~

11.

Which of the following events does NOT occur during ibspintion? (A) (BJ (C) (D)

Dry cotton wool plug

External inten:oital mu.scles relax. Internal inten:ostal mu.scles relax. Diaphragm mu.scles conttact Volume inside lungs and thorax

increases.

Metal c..lalner 18.

Which of Che following slatements about cigarette smoking are MOST likely true?

Damp cotton wool

I. The initial temperature of the beans was noted aod radings were taken at regular intavals IWicedailyforfour days. The dala obtained were used to plot the graph below.

II.

lll. (A)

Temp.("C)

(B) (C) (D)

'8

I and II only I and Ill only II and lll only I, II and lll

30

20

(A) (B)

Q.L-t-+-+-t-+-+-.......-+-.......-+-+-+-+I~

J',l~*~JP,.f~.f~J',.f~,,,~JP,.f~,,, (C)

Time(llr)

(D)

The ioClwe in temperature in the metal container is BEST explained by the fact that the seeds are (A) (B)

(C) (D)

16.

shortness of breath. There is destruction of the alveolar walls. Blood pressure is lowercd.

Large organisms cannot depend solely on diffusion for the uptake and transport of gases. This is because as organisms get larger the

19.

40

IS.

Resulla in penisteot coughing and

numerou.s taking in water placed cloae IOgetber u.sing their food slOres

The rate at which respiration occun in a mammal is indicated by the rate of (A) (B) (C) (D)

sweatproduction urine excretion oxygen elimination carbon dioxide elimination

20.

surface area to volume ratio increases surface area to volume ratio decreases surface area and !he volume both increase surface area and the volume both decrease

Which of the following are involved in the formation of blood clots? (A)

(B) (C) (D)

Platelets Antibodies Lymphocytes Phagocytes

-6Item 21 refers to the following diagram which represents part oftbe bUman circulatory system.

,----Q

21.

Blood vessels which contain valves along !heir lenglh are (A)

(B) (C) (D)

22.

Parul T RandT SandQ SandU

Transpiration is important to plants because it (A) (B)

(C)

(D)

kee1>5 !he plants cool facilitates the movement of manufactured food lhrougb !he xylem assists manufac111red food to move through !he phloem releases excess water in the fonn of

water vapour

23.

Which of the following statements about translocation is lrlle7 (A)

(B) (C)

(D)

It doea not require energy. It occurs in sieve tubes but not in

xylem vessels. Carbohydrates and proteins are transported by this process. It invollll.! the movem~nt of inorga"ic ~bstances.

-1-

24.

The body rids itself of oilrogenous waste products through the process of (A)

(B) (C) (D)

lS.

27.

excretioo diffiisioo evaporation osmoregulalioo

I.

reduce the heat· lost from their

II. Ill.

replace water lost by sweating help their body temperature to remain steady

(AJ (BJ (C) (DJ

I and II only I and III only II and III only I, II and III

bodies

Dyes in 'heutwoocf and tannins in lhc bark of lites are MOST likely products of

(A) (Bl (C) (D)

Competitive swimmers drink cool water at regular intervlli during training to

tnnsl.ocatioo cxaetion respiration photosynthesis

ltema 211,.29 refer to the following diagram which shows lhe bones and muscles of the arm.

Item 2li refers to the following diagram of part of the proximal convoluted tubule of a person suffering fi:om diabetes mellitus.

Arm strai&bl (exleoded).,.p~,.. f«~=f!-.Tendoos of

lbe triceps

Movement of arm

RadJu.s

28.

\

(AJ (B) (CJ (D)

Filtrate to the loop ol HenIi

26.

The filtrate leaving the tubule MOST likely contains (A) (BJ (C)

(DJ

no glucose some glucose less water lhan lhe filtrate at I more water lhan lhe filtrate at I

The muscle at I which is respcnsible for movement of lhe limb is

29.

Which of the following types of joints is shown at II? (AJ (B) (C) (D)

..

a smooth muscle an extensor muscle a ftexor muscle a skeletal muscle

Hinge Gliding Synovial Ball and socket

-8-

30.

centtum that is developed to support the

llml.JJ refers to Ilic t:VClllS that oc:Cur when a student roads to touching a hot object tjy

weight of the body?

wi~wing her bind.

(A)

Sacral

Hot objCct-> Pain-> Effector-> Response

(B)

Lumbar Thoracic Cervical

Which of the following vertebrae bas a

(C) (D)

33.

(A) (B) (C) (D)

Items 31-32 n:fer to the following diagram of. a Tullgron funnel which is used for collecting small soil organisms. a'-----Llght and heat source

The reccplor is Ibo

34.

hot object touched

boat finm Ibo hot object sensory endings in the skin muscles that contract

Which area oflhc brain controls hcartbcat? (A) (B) (C) (D)

Cen:brum Cen:bollum Hypolhalamus Medulla oblongata

Item 35 refers lo Ibo following diagrani which shows when: light will focus for an iodividual with an elongated eyeball.

31.

The purpose oflhe light bulb is 10 (A)

(8)

(C) (D)

enable the investigator to see the small organisms provide warmth for the soil organisms drive organisms to tho base of Ibo funnel keep the alcohol at a constant temperature •

JS.

Wbicb oTlhc following typos of Ions should be used lo cor=t Ibis defect? (A) (B)

32.

Which of the following explain why the apparatus works well?

l. II. m. IV. (A) (B} (C} fO)

I :

Soil organisms show a positive response to gravity. Soil organisms show a negative response lo light. Soil organisms are killed by alcohol. Soil organisms rµove away from dry areas. I and II only ll and IV only I, II and Ill only

rr. HI ;ind :v 'lnlv

(C) (D)

36.

Coocavc Convex Cylindrical Bifocal

Which ofIbo following functioos of the skin is an example of homeostasis? (A) (B} (C) (D}

Storage offals Release of sweat Secretion of scbum Maintenance of body temperature

.9. 37.

AJJ alhlelll who bas not eaten a moal in the

ltCl!!l 40-41 refer to the following diagram ofa longitudinal section of the human male reproduc~ve system.

past tilarboun is aboul ID nm a race. Which

oflbe following bonnoncs will be secreted in bis body? (A)

(B)

(C) (D)

38.

The pituitary gland is called the 'master gland' becauae it (A) (B) (C) (D)

39.

Insulin only Adrenaline only Insulin and admialine Glucagon and adrenaline

IV

---1----m

COlllrols other endocrine glands

controls thought processes ia found in lbe bnia iJ the largeat gland

40.

(A) (B) (C) (D)

' One advantage that sexual reproduction bas over uexual reproduction is that sexual reproduclioo (A) (B) (C)

(D)

ii conservative leads to variation produces di.tease-resistant crops produces greater numbers of offspring

Production of spermatozoa occurs in

41.

42.

Passage of urine occurs through (A)

I and II

(B) (C) (D)

II and IV Ill and V IV and V

The process whereby an embryo attaches itself to the lining of the uterus is called (A) (B) (C) (D)

..

I II Ill IV

implantation fertilization copulation gestation

- 10 -

1JWJ refen to the following diagram

llmM refers to the following drawings

which shows the change in the thiclcness of the uterine wall

showing fiuits A, B, C and D.

R

Q

~

I

I

I

. . .. ..

Thlckn... of uterine ".U _:

1

14

11

(A)

·:

ll

(B)

Tlmefada71

43.

· The change in the thiclaiess ofthe wall of the

uterus in phases Qand R is brought about by

(AJ (BJ

(CJ (DJ

44.

increase in oestrogen increase in oestrogen and progcaterone decrease in oestrogen and progesterone increase in oestrogen and decrease in progesterone

(C}

Which of the following is the function of Jhe testa in a seed? (AJ (BJ (C)

(D}

Absorbs water for germination Offers physical proJcction Forms part of the developing embryo Is the food soW'CC for the developing embryo

(D}

45.

Which of the fruits above is dispersed by water?

46.

The gene for coat colour in cattle shows incomplete dominance. A purebred cow with red coa~ mates with a purebred bull with white coat. All of the offspring have roan coats. Which of the following represents the genotype of the offspring? (A) (B}

(C)

RR WW RW

(D}

RO

I

r

!

!

- 11 47.

Which of the following does NOT result in oatunl 1election?

51.

Biological vectors of a disease can (A)

(A) (B) (C) (D) 48.

Mumtion Onfting Variation Migration

(B)

(CJ

Which of the following sfatemeots about the impodance of genetic variation is true? (A) (B) (C) (D)

More ofl'spriog can be produced. Competition is reduced among individuals. Advantageous characteristics are passed to offspring. Mutatiooa aro less likely to occur.

(D)

53.

Which of the following statements is true about sexually tnnsmitted infections? (A)

(B) • 49.

(A)

(B)

(C) (D)

50.

two daughter cells with chormosome number, n four daughter cells with chromosome number, 2n two identical daughter cells with chromosome number, 2n four identical daughter cells with chromosome number, 2n

(D)

54.

I.

Ill (A) (B) (C) (D)

Genetic engineering Artificial selection Natural selection

(C) (D)

(C) (D)

Old age High salt intake Regular exercise Sa!urat:d fat in Ute diet

(B) (C) (D)

56.

a vaccine is made available troatment is given to all infected with the HIV all blood is screened before transfusions risky behaviours linked to transmission methods are eliminated

TI1e type of disease that can be prevented by inununization is (A)

I only I and III only II and Ill only I, II and lII

.Which of the following factors does NOT contribute to hypertension (high blood pressure)? (A) (B)

SS.

They aro difficult to control. They are caused by bacteria. They are transmitted by vectors. They affect the rospiratory system.

The rapid spread of HIVI AIDS can be MOST effectively roduced if (A) (B)

Which of the following processes may be used by bumaoa to change a characteristic of a particular organism in a short time?

11

51.

(CJ

.Mitotic division results in

spread all~ sprcad only those diseasea wherc the pathogen must be carri~d from host to host sproad the pathogen only if part of its life cycle is completed in the body of the vector be less easily targeted from the pathogeo when controlling the sproad of the disease

pathogenic deficiency heroditary psychological

Which of the following statements is NOT true about humus? (A) (B) (C) (D)

It iinproves soil texture. It increases water retention in soils. ll supplies nutrients to plants and soil Nganisms. {t rcduc'!S ;ieration cis0ils

- 12 Item 57 refers to the following table which represents dala collected for three species of organisms in a particular habitat when five quadrats are thrown. Each quadrat

59.

(A) · A substance hwnans use! for fuel (BJ Asubstance humans produce (CJ The compresaed remains of dead plants and animals which can be used aa fuel (D) Miocral compounds which occur u part of the earth's sumce and which can be used u fuel

measures lm'. Specimen QI Ql QJ Q4 QS Total number or org1nlsm1 counted In 5 quadralJ p l l 0 lO .3 Q 0 0 0 0 R 4 20 I

s

s

57.

s

60.

Which of the following represents the species density for species R? (A) (B)

(CJ (DJ

58.

s s s

Which of the following stal