1978-05-30 — Page 25

有教備案頁三第張七第日四廿月四年午戊夏··

钱一晚

育僑華

HONG KONG EXAMINATIONS AUTHORITY

JL

#

HONG KONG CERTIFICATE OF EDUCATION EXAMINATION 1978 生物(同等課程)

**

SARA BORE&

BIOLOGY (ALTERNATIVE SYLLABUS)

PAPER 1

One hour and thirty minutes 8.30a.m.10.00a.m.

WAH KIU YAT PO

controlled-feeding experten, we canle out on two groups of young rats. Both groups were kept ons a dial caning of starch, sport promoin. for, merci salts and water. In addition, pouÐ Á MARŠVOČ 3 milk per day for the day's of the experiment only. Group receêrmé að velli for the Bru 20 days he 3 cm2 per day from my 20, onwards. The este are shown on the followin traph,

報日僑

二期 星

日十三月五年八七九一公年七十六國民中

(1) Wise is the fusion of

HONG KONG EXAMINATIONS AUTHORITY,

it A 440 44

(vi) Draw & fully labeled diagrams to do the longitudinal seculars of Y.

(14 maks)

HONG KONG CERTIFICATE OF EDUCATION EXAMINATION 1978

BIOLOGY 生物

試卷一

PAPER

A controlled-feeding expertinent was married oys on two groups of jaung sets. Both grips were kejń un z Wat comelling merch, ausdes, pure proceda, fat, mineral salka and watas. In addition, group A caschwed 3 camik per day f

y five th

the Just 20 da

2 days of the experiment only. Group received nu milk for the dva 20 days Vol 3 de gèr day from day 21 as is. The results shown in the following graphs.

-

BANETRACK) OKYA *ROGENIN-

One hour and thirty minutes 830.000 m

This paper must be severed in English

QUEM LA COMPULSORY SUMUMA

The following shagrins show the severans df die Bower and the fraka of a gen plant.

„This paper must ho answered in English

OMPAU SONY JUNI

With relepo je ta diagram of t things duimas, grine the stortoral festes suited for

sect gallation

-(0)- Stave two iðranlages of cross-production.

jud. With salivande to the diagihan of the front.

('(2) nime the parzy "The flower from which X and Y have develop

· (2)

Slate

gjesi on mushy has nest developed, at posmin A,

funciona el frani.

The folowing digim shuns a developing onbaya umude the urees of a mammal,

-blood year

wad xl, uterus

Sute the importance of A”in the development of a cremonat

((0) Haras the structuie zmecting" X to, the embrya.

15-(v), Stein`imo,foration of the fhad trade" Y,

(1, 0); Deserted the pas played by the wiers

-(1) - phiyằng thực development of the carbryję.

The foherience of colour in corn (Zea maysż fullows Mendes Fan Law. Grem colo in dormito Wild The: poe for the sommer shmacher x tepisented by the symbol and that for the incre Jcharacter; by the symbol L

Sped, were obtained by coming ten heterozygous plantes, 400 all those used were germinated in the dark and mother 400, in light. The seedlings were examined some days later and the following results were s

Halsbetings fomed

Goodlig

0

*

397

烟

days

What wit the col ut milk walia jrowth of vath ? -

(a)... What ésaantal dela kakking in the diet was provided by chelmus ?

City Why did group tuto cease in average mans for several days after frülk was wzholezen, from

The die1

(4) What would hope to: group ℗ if az milk was shown threaghout the whole expaniowat 7

(and was tha on of starch in the dirt 7

C) Why was the espoirmas curted out on two groups of rats cather than on two divide only 9

(mi) Why were young uns wæd in the experiment trattad de stok öncs Y-

dan

(shaska)

E) Sewage retinoble bacteria was decharged into a tirer. The quantities of chrobusta and the Bision of Uning organlans en various distances downstream alpong the aäver mere determined. Tha topoli me das le diz following graph.

Power

With reficence to the diagram të shẹ Nuwer shisen, war three, structund features miked for Letet potilaallon:

(0) States advantages of cross-pollination.

f). With reference to the diagram of the frui

(2) name the paris, of the dower from which I'and' Y have diviljad.

What was the effter of realk on the growth of rats.”

What eventud factor lacking in the stint was provided by the mak

Why did pup quelque to socrease in sige mass for sare;d dayr after suck was waanden

he dia 1

What wont happen to group ži if no mok was en hughest the whole experimen

What was the of state in the dier?

(ri) Why was the expeitman) cartled out ca two poopa at eas rather, thưr on two Individuals only!

Why were young mis and depoiment lasted of silt on

marks)

(3) suggest one reason why X has not developed it podison P. (skane two functions of fruits..

A compound at at a destanlod tretaceous plant a pirated anthoma as the tallum expused ja sanligt hat dyno haars

(12 merks)

the following depan stones a developing anthryn imule the uzemni il a mammal.

cipale.

23°

discharge dans downdreen to kibomenes

Exploh vày the crygte conceptration drops from the paint of sewage discharge to a pɔlm że: 3 kitenvers dowasteeses and then tists...

Descent explow the chanje in igal population affects the fisk population.

In expect to determine the peromings of water and organke wonter in and the following results were diluned

133

Weghi e pomponating dish • 80. g

(1) Weight evaporating diahr » » = 908 £

(4) Weight of evaporating dish + idey sad with orgiale mutter 9.95% g

(1) Weight of exporting élsh + dry soil without orpak ruiter » 95.8 g

Decke how you would obtin reseta (205.

(1). Describe and exitum what you would wry abattre, when day voll a heated to obtai

Posate (V).

(ż) Prom the above alla calentate the pexermage it

„(1) 'men, wird

(A), nic mateɛ.

The followit csian

seasi

422 marka

100

vyrobila G and g, maka's digam to show the crom between cho can heierbeygjan i

the cats of (1) gotypes of the seeds and (21 phéristypes of the weeding perduced by the

*) z what trebuine of these saada is herraży saw ? ̈ ́

2(1): Why have all the seede' germinates is the dark developed into wheedlings

Elled the percentage of white seedlings which havé developed in light.

cuous about the appearance of culmer at cam can you diaw from the above exprimer 2

(10 marks)

-fina-dad vifa fred potato strip w paned to a cork at a still weight was expended from the other end. "The work was firmly faced in a trough which was filled with weet. The appetino of th potátó vizip de the and of one hour is shown in the feźlowing diagram.

Pak A

cancentralet pozidan

hydrazide solution · `

What acuity of micro-organiums tieng Investigartā 7

(1) Desde and explly the result of the experiment....

(a) What would you there if the conceptoxine poradím hydroxide, solution in flakit and ♬ was

replaced by vid barborate indikator solution?"

The following gaan bows a noction through the hayan

(11 mars)

Blood word

wall of rus

hlodi vezal

sabrya

wall of uterus-men

Nam and Y.

{v} "Siste the 'kupnotisen of Xin me developereur of a rttaanesjal.

(a) Nama the stmeiure canoesting ♬ là the embrya.

(iv) Stati two functions of thai funt (rada V.

Describe the part played by the uterus

(3) during the development of the zubryo.

(2) 有搞

regon in which cells alc

by jet of sternt að

the begining of the experiment

Staw with remotes, Wierkimer

Leonnat Nask wrapped

in black paper

v end of eindeer

(12)

The inherits of colour in turn (Zar may) follows Mendel's Flexi Law. Green coibar is domináns in white. The gene far aha Boudrait sharietas is opresented by the symbộê G and that for the mucnedive charactes by the symbol ..

Sands were obtained by trowany rias beforezzygous plates, 400 pfceu meda was germinand in the daşa and anochar 400 in light. The seedlings www examined some days 100 and the following resulu were obraitsad,

0 arm manufactured in all the leaflets.

(2)ch is present in all the leafcta.i

439" food; if present in die lepleti, can be transported hi the stem.

(1) What in the guipure falling away the lap of the teab teaflet ?

(1) Nema che thine which sains red when a cross zenit loci fedotegia N koderved siden a migra

cope.

112 maika)

(b) A price af dunk wopped in mintál volta dosta mapigano and violßdiy kes the dips were pinned

• Onip the pajtimt woul, with then udicles polazzig vo differeņi duergons, as shown in the following disgrimm.

Condition

* Dark

ジ

No. of sendings tomed

др

white

a

392

500

_98

verzzygoms plan

Thang vital to and j, raske a dogum bu shes. The consa, between

-The Trut

State the rails 3 genotypes of the seeds and (23' risenotypes of thuz jedlángt produced by the

Gr4.

ski What, fractionist'abesé senda a homozygous,?".~..

Why have all the devoted in the dark developed inte vite soodlings Calone the pesentaré uť miškė seedlings which have developed in light.

Est) "What timeless abans ille appienpance of solour in corn can youder from the above experi

(20 marks)

(6) The following diagram illustrates an excuseita investigate the invins of in v

ten woulated milk. sodium hydrycka suluționi

cork mapped with

"Drew diagram of wędkijgt X and 1Ÿ sci' show what would happen to their palleles adura Co

What conctuatori could be drawn from the observation in ()7,

(1) Explain how muxim affect the growth of the radicis of seding Y.

(iv). U you were going to set up a montrot for this experiment,

same apparatus you would we.

(1)

(2)

tute wie rest you would expect to observe,

cork Brady Fixed

hand of trough

“(0) – Frums za apporéznén vf, the poteva surip, what conclusən can you draw about the

(8) -- Diacribe to typbém pay, change in the appearwice of the politi

pepitated ining submitted, socrose sotiation fastest of ważce,

() Debend swplain what you would observe under croscope when the fo

מם

120 marks).

composed trai

za shown in the followbig diapam and exposed

clo aunlight © four hours

conical Back ropped

in black paper

in which cells són ·

e transported to the nem.

Derida Seafle

TUT: What

(ii), Natoa ikai žinau whých mated bed wfieri a crown sections, frisen, jegson 2 is obscured under

{12 marks)

boting buhoket

WE BIO

cation, wel szakad

wil wegter.

what u wake place în A and B if the gre to focus on a max object?

Exp why booking at near object for a long tre caines more arrain on the cyp.

(15) Whai chượu will take place in C and 17 18 th gym in to focus on dilant object

(a)

tay vlada Props dieting object core ita focus st a point in front of the iouime. (2) - von would be the defeat of the cye:? -

(2) type of lan werdő be ̈ustable for exirecting nech i defent.

问 (1) Kim

(2)

and ̊F.

now and Feiffer in their abdity to detect the form and colour of an còja

– Maman bi Klämmin which is essential för vision and explain why boli jespartani.

· Áljes half an hour tha liquid index în A moved touri posit for

semised in

to.

Explain the results in À and ☎

What to ite vat of the wiri gauze in

64)”. What to the purpum of wiling up 8 ?

(19 marka)

(iv) Would it be better if i capilary tube if wider buje was isel ja at. Explain your answer.

(marks) Dexplain why an increme si teraperament the samazināmig mass aflegs the case of

{Dette and explain clau adayıbe teatmes of gilli fos paseous exch

$5.

The internal ensyonment of the mammalat body a kept comnti by Norwesteia. Desertse how thes

constar endromunt i malotabad when

10 body chilled ny i maden drop of the surtounding temperatura.

(i) the pager level for the blood rises rapidly after celog

(2) the blood faluted by excess Intake of water,

The fellow dagram shows a section through the busman gys

(b) Two samples if toeds were, germinated under identical conditions except that pownplu was de-

posed today and the other wae placed in darknew. The fresh weight of 20 words/mediaga from ach smple determined at the beginning of the experimens and on the 10th and 20th days. On chendon weight of the same number of seeds/serdings with water extrowed(dzy weight) waa also found. The results eve shows in the Following table:

· (31-Marka)

The following diagra show an experkosen to smestigate the respligting of a polbed green plant.

What clunges wi♫ (ake place in 4 and ♬ if the eye latex foėsa zon à mes askjent T

flà). lixplain why booking at near objects for a long time counts mbere strain on the eye.

(ík) · What changes will take place in Cand D if the eye is in fes una dikker object

If rays of light from a distant object 'came into foghs as a point to fint of the clipa, (3), what would be tha, defoci of the eye ? ...

-C23

w type of lens would be suitable for converting such a idefect “

(9) (1) Race 2 and F.

.

(2-plain how and 8' differ in theis abdity' les desy she farm and colour of an object.

jang. Mare the women white is cametist for vision and saplin why it la important:

Pharoa vaadi that cry bind to the mor.

mmpestion of blood in two, blood vestia?

vansposition of blood as it passes through the kidneys 7

Candidate Hanay

().The following diagram wrown a bedeler elles sound the tam și a pren olan X.

(9) Lat the difference in structure and function curvegi :

.00) (1) Neme de sype, bf emaciajand

(2) What, in X-caßed in relations to dediër,

(1). Naine Y. spit etnia ten famethone:

DK) Namos Žal stata ite kuppesanice.

Asewer to 3. D) O

Time

Begining of the

Fresh weight (

Dry weight (8)

05.

In

| daykali darkiven daylight

dapp

201

20

.16

16

109 Ary

29.5

78.3

13.5

13.

20th Joy

473

26.

11

30.5

a-Pimmber in the spent lasicakad

scorded below",

[JV miska)

(b) Two samples of seeds were germinated unter dentest cordibum except that one sample war exposed to daylight and the other was placed in darkness. The fresh seacht al 20 medisineedlings frem a striple was determined at the beginning of the expetent and in the 10th and 20th days. On the weight of the same number of seeds/söedings with wavezzemoved (dry weight): was also found. The results are aktuwn in the following tabi:

THIR

· Fresh weight (1)

61

$4.

Dry weight (

A

daylight darkness. "Edaylight

alakped

Beak

Flank C

Beginning of the

experti

30

20

10

plastia bag

10 day

13

20,3

13.5

12

Make

There is a mistaka jet that whore setup. Sup and explain how you would correct it.

11) Name the solutions used in fucks 4, 8 m3 C.

(10) State dva purpose of calay the solution in each flask.

-(e). After you conection, what would you observe in

2011 475

47,5

M

21

105

Candidate Number

15

ar the vad of the experiment ?

Evì 'Why should the pon be covered with a plastic hag

· (1)~ The following diagram shows a dodder zuding tuind the steak

مجھو

If you wiempi is part of Qvertion 5. wikte yotte Candidate Number in the spruce tradicised at the tapi, Trat aff chis thest and hand it in with your unwer book.

Plow the relta of the Experiment on ike pash paper prokkel belan

(1) Describe and exphòs the changes in 213 fresh weight and Eldey weight withe resillasps in das lipfic

during the flext: 10 days.

(1) Explain the changes in fruch weight of the seedlings in 119 slighght and (2) darkness during the pealand

from the 18th to 20th days.

'(w) - From the graph you have diawn, fettride the dry weight of the meglings in 213 daylight and

(2) darkws on the 15th day.

END OF PAPER

· List the differmoni in senorge and fasetion barnes the locus of codder and those of plan

(1)

(1) What

the type of soclecion, between X and dođim

called in relation to dødder

• (9) ' What is the 'ingostince of X to dodder

(c) Mai 2, and atuta Mil lesportance

(11 minskaj

• The following diagram shows them giàu Tien of

› lower jew if i rummet which has a denial

Cornubi of 17, of

To what type of can be the dentition shepted 1

'wath cre posted by this meal

(1)ar and 7,

| (1) · With refierove to the ships and position of X ka itu diagram, explain how it la adapted to tu

(v) What the function of 7

60. Draw a fully labelled disgrow ip show the longitudiral section of P, -

[k]

To what type of diet te this destillon adaptas ↑

(0) How many such are potented by thì mammal 7

gua Nithi X and Y,

(iv) With relátimon'sy ste staps and position of X-la, ihm magnes, onġlater how it la adapved zą ita

socios

Answer to $. (b) (1

END OY PAPER

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