1976-06-02 — Page 26

郭日僑華

三期星

日二月六年六七九一圈公年五十六國民華中育教僑華

(1) From which part of structure X lus the semnal shoot of the plant developed? (b) Give two types of storage organs used for vegetation propagation which at

different from structure X, and name the plants in which they are found.

(1) State three advantages of vegetative propagation in growing potato stops: 7

A green plans originý kept in Jakie was exposed to light with incang intensity, and the output or uplaks of carbon dioxide were recorded in the graph wa shown below.

rubber stoppar

carbon dioxide uplake

(E) Why the bell Jara poor representation of the ribs?

(1) (1) Which space of the manistian body is repented by space & in

diagram

Name the fluid.coûted in lis space.

・(3) How does this fluid est breathing movements?

marks

(b)(1)

Describe and explain the changes of the ribs and diaphragm when a mimmi · breathes in air.

(1)Explain clindly how the changes in (1) enable the lungs to take les sir. (i) Explain why the breathing rate of a manimal incie sues after vigorous motivity. (The following diagram, shows the blood capillary la contact with the wall of the

avec) of the hang.

[2 marka

from pulmonary artis

wall of alveoli nuchus layer

生物

HONG KONG CERTIFICATE OF EDUCATION EXAMINATION 1976

BIOLOGY

PAPER I

(1) The apparatus was not set up properly. Sitggest, with reason two

sonerons you would muka to improve the experiment.

·EU) After your conecijane, what would be die alanormal' appearance of this:

seciding" at the end of the experiment

̇卷二

(i). What are the use of calcium. to

(1) green plants 7°

上午的三十分至上午九時四十五分

本赋些必獵用英文作物

One hour and fifteen minutes 8.30am-9.45 .rn.

(2)

beinga!

{7 marks)

carbon drazide

-output

This paper must be answered in Engl

(a)

In human beings the saflity to roll the tongue is deftrmined by the pressice of i Volant gene reprosented by Ţ, whose recessive allele is represented by t..

Answer-Question mul any two other questions.

Question, 1 in a COMPULSORY question

In an expedient to investigate the transport of substances in plants, an actively growing plant was treated in the following waya ke

"A-sing of hark, containing phloem was removed from a listy brunch. A few weeks later swelling fanned above the ring us shown in the diagiam below.

The following diagrani down a family vice for number of peuple.

incing light intonally

wall of blood capillary

(f). What process is carried out by the green plant at polat X?

N

With reference to-light-inversity and carbon dioxide output, ixplain what' happens in the green plant between pointa X and Y.

....

(i) Describe and explain the change in the amount of bon dioxide at point Y.

() with reference to Night friensity and carbon dioxide uptake, explain what

happers in- the green plant between points Y and Z.

(13) The fellowing table shows, the distribution of stomats in the upper and tower epidermis of leaves Land. M belonging to two kinds of plants growing in different habitatt

..Lexies

Average number of ptomais perm

Upper epidermi

Lower spidermis

1,400

-2,200,

Give three features of the wall of the alveoli and explain how they make it 157 effekat surface for gaseoui exdirige.

(u) Name and explain the process by which oxygen in the alveold tends to pass

Into the Hood capillary.

f Nane' the fluid X In the diagram,

Compare the pulmonary artery with die pulmonary vein with reference to

(i) structure

་་་

(2) composition of Duif X

(3) attire of haemoglobin in their red blood cells.

Twenty cockroaches were placed in bax with two cumpartments, as illustunted below. One compartment was dark while the other was light Seventeen cockroaches stayed in the dark compartment and the remaining darce, were found in the light.

Explain why the swelling formed.

Another branch was simbuely tinged as in (0) batween two developing fruits simbar size, as jaisraved below. Th

(1) What would be the different in the development of the fruit

(2)

and below the ring after al days?

Explain why,there is such a difference.

(B) A sing of tixxase containing xylem was removed from a branch between.

leaves illustrated below.

Squares represent males, and circles represent females..

Black aquaces and clicies represent callers.

White squares, and circles represent mortuüber

Arizal line is used to link up encrabers of the ame gerecation.

A double builzontal line indiestesi matage.

The offspring of a couple are connected to then by vertical lite.

(1) State and explain the genotype of individuals 2 and 12.

(1)Show clearly, using symbols T and 1, whit the chinees me of individus! 14,

having children who are roter if ter husband is

(1) anonsoller.

(2) Individual 13.

Explain why it is not poseble haleroygous for T.

whether individual 15 in homozygous i

(b) The following diagrams Blustune the sinator stage in two types of nucitas division,”

Pand., in the cells of an animal with two paks of chromosomes.

10

XXXX

6,800.

belongs to an aquatic plant. Suggest a reason for the distribution of its

stomata.

-(0)- 'Make a fully-labelled diawing of the surface view of a part of the lower epidermis of leaf showing the cellular structuer of its component calla

() State with-remony the changes that take place when pieces of blue cobalt chloride paper are stuck, quickly to both slices of leaf M by mean f transparent adhesive tape..

It was found from experiments-thai

slich in guard céis converted to sugar by mnaye action when, addity decreased ̧!.

(1) during daylight hours the osmotic pressure of guard cells, la high

compared with that of epidermal meija.

Eling the above evidence explain tow stomata open during the day

inurks/

Expfit what would happen to these two leaves after two days.

The following diagram shows the internal Atructure of part of the wad of the inarnimallan wall intestine.

A

Name the structure X, Y and Z

(1) · Bow is milione digested in the small latestive 7

(2) How is the product of this digestion absorbed it structure X?

(3) Through which blood real is a product trimported. Grom

intestine?

(4) Where and in what form is the product stored 7

By refertuce to the diagraqis only

Stam the difference between the two types of nuclear devision at this stage.

(uy (1) Explab How the daughter cells will differ face the parent cell in P

(2) State where this type of mufexrdieriton la likely to take place.

(3) Explain the importance of this type of nuclear division).

(Bà) Explain the Importante of the nuclear division'O,

(c) The following diagram represents a young-poto plant which has developed from

structure X

What type of storage orgais la structure X7

What kind of food is stored in this strucnire?

Name the process carried out by the human body, which és-strailar

splation in planta.

((0) -- Names the structure which carries out the process in Ci).

(i) Explain how

the process regulates the body tenipriatura.

(3 moka)

(4) The following tlizgam, shows a model used to demonstrate the breathing mechanism of canada When the rubber sheet is pulled down by die string the ballooni swell up with air.

·Y-shaped

glass tubo

Balkesn

р

string attached

to rebber sheet

(7 marks)

Entrance to

dark compartment

What is your conclusion from the results of this experiment?

(7). How in this behaviour advantageous to enekroaches

Using this but, how would you find whether, a chemical X is effective in -repelling cockroached (sending them away)? -

(b) Give and explain four ways in which the cockroach adapts itself to ring onlin

student was blindfolded and his fingertip was pricked with a needle, he bmediately withdrew his hand before he actually fell the prin

(c)

When

(3)

What is Us type of response called

(B) Describe fully the events which took place in the nervous system from the. moment the student's finger was pricked until he withdrew his hand.

(13) Explain why the student felt the pain andy after withdrawing his hard

Give an example of this type of response performed by dis eyes and explanarka,

Importance

The following great shows the result of an experiment to invaștigats de response

of growing 10 in nexternal asinaħar

Eight-proof

irough

sutha เ

weds

中學會考附加數學卷一試題

Answer All, elgbi quetions in Section A and any THREE questions from Section B. All working muat be clearly shown.

-Unies Orwise stated, irrational mumbers (ca. √, w) need not be replaced by thele

SECTION A

(40)

Aruwer ALL. quetizen in this Section:

Find the genealouston for # in the equal

y-axis.Find as the jivesordinate of the point of división.

Find the quadrate equation whose roots en 2

Give your snows in san sirrplest firest.

Find the incelile Integral

fx + 2x13 di

A particle moves along the xnx so that its displaczirment in at any time after start is green, 5)

2× 22 – 152 + 247–20

Find the velocity, in magnitude and direction, with which tha particle startu član

(i) Find the nium distance of the partich from the ongs for i'ɔ 0;

“qui)” „Find the time interval in which the pružilo is rating towards the origin.

(b) Sketch the gtsply of a ugaanat z furr≥0.

Given that is the point (4,3), in the Cartesian plane and '17 in the origin. £ is a line through in cutting the positive coordinate a Pund (.

(1)

find the equation of L W the area of 300 traum.

(1) Find the equilosa of the lines by and bad sim pasting ikrough -d- andai a distance of

y5 uniti fum də origin..

(lt). Ir a la the soul, angle between the knee. Gy and Lạ; and § to the inclination to the positive

Xals of a straight line perpendicular to. L-in G) above, show that a à fa

O, A and B in threu commeruthe paints așa straightline along one bank of a cives, and DA =x, 08*2. CD in tower on Úsa opposite dark with C, the foot of the tower, bring' on the same hörtzontal plase 10. A xod. 2: The clerations of D; the top of the tower, as observed at 0. el and B, are found to be 30", 50′′ and 45°, respectively.

(8) Write down thọ the expression for coLCOB in taxes of 3 and A..

(4) Hence or otherwise, find, in terms of e- and ̧à

(v) Ping when a 's 60 m, 2 × 90 in.

Tubber sheet

Give two reasons why the rubber skett camiot truly represent the diaphragm in breathing morement

(lü) - By choosing xaltable values for a' and i', eyglusta (1020), correct to 5 places of decimals.

(iv) 1970 he pupulation of a city was 20% of which 10" wera seni. Since then the population has been increasing neadily by 2018 per armim whereas the tribes of alient has been decresAJAR steadily by 0-99% per-znamy for four yeas: What hi the possentage of the number of aliens in the total population at the end of these four years, correct to 3 sigruficant figures?

Solve the equation,

and ages she sets on the Aajand Diajam,

E) una part) or ciherwise, solve the equation

(+√JY64 D...

An Inverted, follow, circular cone of semi-vertical Farge 30" and hunght 30 cm's complety Bed with water. The water than begins sa leak through amall hole at the vertex. Emitually, just the weer begins to leak, the depth decreases aỶ », rate of 1 ends. Assume the volume of wiler coolinues to driscase at a conkant rais, whatsa the rate si shich the depth is decreasing when

ep10.cm?

the

The water Com this coor is collected in another como of the ut suze (but no Hak) directly below the first, cope (as shown in the diagram). A small ani in indially at the position

where,

Q4 = 4√5. When the first drop of water hat the poin! Q, the aut begin to climb up along a line of steepest aloge (ÚA produced) wah i- comitast speed of Find the time taken for the height of water, in the lower cose

to be swing the same mate as the "sertical component of the ant's velocity. At this stormana

(1) Denote.by R. the region bounded by the curve and the fine 04. Pure that the acen nf the

region. A sa † of that of the Zinnghị. DAP.

(0) Find the volume of the solid generated by revolving the region. R-bout the

32.

A cleche C: *** ** 2 24

and straight line L

interest 43-A, and 8.

Find the ratto in which the five segment,jelning the points

3) und Q03; 3) is divided by the

END OF PAPER

(5 marks)

中學會考附加數學卷 試題

is the and wet or dry?. Exphin your couchaalon.

4(4, 6) is a point on the rares", „je? » 9z.

Th

Find the coordinates of the point ♬ on the tune such that the tangent to the curve t parallel to the line 4, who is the orig.

Answer ALL seren quattor in Section A and any THREE questions from Section B. All warking dearly shown. Undes otherwise stated, imitional numbers (t.g. v, a) niced rushe saplaced by the approximations.

SECTION A (40) Teka)

(5 mi)

·Answer All questions in the Secon

If sin x cuty + 5 • 1, Bod

(5 marks)

Find the coefflereal ad gởi the CAI ĐỀ ÁN VÀ

(2x)(2[***

A blood bi volated, word it beconser spherical. oglinues to be inflated at a comitant rate of 1-3m. Find the rate at which the radius of the balloon is secreasing whm (la redbukla 1-5 m.

(5 marks) Solve the inequality

is ascending powers of.. and implify your requi

Express in polit. form the following complex number 6:

√ and wate

'(3 Pack)"

· Hience or otherwise enpresa in the farm of a 15.

(maks)

Mis moving point on the curve yle Bra'. Through at in straight line in drawn perpendicular to the line intersecting it in Q. Find the equation of the locus of the polai Pauch that. A is the midpoint of P. Since whether the lacus sa a parabola;'u hyperbola or an ellijas.

(5 maka)

(): the sea of BADC, ind

(U) LACE.

SECTION B

(60 ks)

Answer any THREE questions from this Section. Each question carriez 20 marks.

Ja, di are angles such that "900" > « >/

Lan + lan♬ 4.

fad, la remma of a and b :

tan (+).

Find the equation of

the focus of the centies of circles pasing through X and

(maks)

(b) The side with a diameter,

A(6.27 and BD, Ay are two fixed points and in the onginis vormig part such ibai - LÚPA ma ziaky angle. Find the equation of the lpcus of the mid-point & af AP:

·{6 (parka)

(ii) the side which his (to'santre at (4, -4) and bisects the cremerce of

END OF PAPER

中學會考附加數學卷三試題

"Answer ALL questions in Section A, and my THREE questiom Tavimi Stetion B.. All-working, must bekkady shows.

+

- Eyjna otherwise suled, irrational numbere (eg. VI. *....yết need not be replaced by their upploximations..

Take the scrolération due to pravity, z. 14 9+8 m/s2

SECTION A (40 marks)

What is the external stimulus being investigated 1 (c) Name the response of growing 16os lo the reunius:

(5) Why is the wire gaudé placed in a sinating position?

Explain why the roots grow downwards at first and then curve, upwards (What is the reason for carrying out the experiment the light-proof box?

END OF PAPER

A-load of 600 N is to be raised by means of a fučilonless block and tackir Fach block fan the lower block weighs 10 d. Find the elfoer jegated rid the efficiency of the lify.

- A body of mias 1 kg, lying on a horizantal table, acid, an by two horizontal forces as shown in Figure 2:

If the table is smooth, and the "mitial

acceleration of the body ană la direct

If the bible as mugh mough for the body ja!

(to restais at rest; find the ranfficient al friction

between the body and the table

Figure 2

A jer af warung honeontally from the puzzle al alune at a height of 10m abovegitand reaches ilje ground könntal distance of 20 for the guale Find the initzal velocity of tho jei:

A lorry of mass.3 Mg vs from rest up an incline at 30" to the hortented and offengak 10 s. 17 tury takes a arrive at the top of the cline. Its velocity is than 6 m/s. Neglecting Trardumallisses.

find

013

the work done by the engine, MEU

(i) the average power of the engine.

SECTION B (b) ma

Answer any THRKE quem from in Sevilon. Each queation case 20 majka.

10.

A rocket, of mrum. Kilogram fatanchéḍ vertically upward front rest at ground level., 193 engine declips

'constant thrust of news for † féconds and suddenly stops. The rate, contesto vise und

then fall back to the ground. The tenaf ume of flight li 90 seconds.

行]

Neglecting, aki resistance. Find the initial upward sceleration of the rocket.

(3) By drawing the scocity-time paph of the rocket, or otherwise, and the pertest height reached "27

by the pocket in regn of t

(til) Find the time the socket takes cu fall fines as higheit poietta the guana in temsiet "ƒ, and turned

And 7

A body of masa Thy is placed un à mough plaie oulived at an angle sat tukaj tothe humuzuni. The body is connected, by w fight inextensible strigé passing waves a fixed sababli pulley as the top of the plaig

of kilogrami hanging firely

(1)

16 m = 3-4, and the body is sliding down the phne with sortatea velocity, finding coefficénat i

· kiwiśc friction between the body and the plane

(2) If an 11% foyd the acceleration of the body and her ceritasay, the terme

A man of mess 39 kg, mandi en the endă a of a statumsey trolleyind mess. Fillky and fength thri which in fase tơ mang du stranghệ hangonia! trwilonless ints. There is a lamppun, by the side of the daher end of the trofej. The man then runs on the tolley from a un datu satifogmyelocity, if knits rebitive-tolhe ground

(What is the velouty of the pulley when the can reaches #?

(B) Find she viene raken for the musta un feton d 324.

(w). Find the distance ravelled by the alley when the man reaches

(h) | Fand the distance verween the tumppost and the cœure of mass of the man and bodigy, sa

when the max at 4`, wod when the croco as my punt between 4 and 8

A unifu

plakat, n'qurned water a smal

borom plate al acestui fustell f The fo cardioma of A, B, C and late 19-05,591, 12) (12, 12) - and tā,0), respectively chi cant · Faces sei sjóng thể vidat at the plate aș shown in Figure 4 The plate it in equilibrium under the nation, úd these forces aid the reaction at the pin.

(1) Whats the magnitude of the force exerted on

the pun?

()

Find the locus of the possible postitoni of ♬ .

Lance the position of the penter of any of the plate. Hence deduce whether be rast it s posable to pin the glute at ata ventre of gravity

Figure

(2)

certa

(k) zan ($).

Find also the range of ≥ if x + Ø tườRÁTANE

Hence or otherwise, solve the following equations for a,, 5:

taan 3,

tanolan = 2,

10. Lat the complex number *, • -¡ + 1√T.

(0 Reprint 4 and conjugar 2 in the Argaad diagara,

("Calculate the modahu and the argument (amplitude) of 11.

(W) x = 4.), wipreme zy in the form «» ib.

Ite) Show that both i, and zi acerosis of the equation

By using

́or otherwae, evaluate

Show that

Arver ALL questions in this section.

L

(5 marks)

Howbe evaluate

The by under the substitution » • Jan

(7 marka)

SECTION A

Acter any THREE question from this Section. Each question caries 20 marka.

Expand ending power of ear at the seem in 2* /

By pulling • 1 and x = 0-01 in the above expansion or otherwise, evaluate (0-9903)") rotect in 5 places of decimals.

And the

the Im to topple,

(5 marks)

A rabbit an at a short durmur east of a hunter when då starts to run at contant speed towards the direction H30′′ E. Simultaneously, the barettes fires his gun in the direction, N85′′ E and hit the rabbit. Asmening the bullet takes a pteright resurse at 100 m m the same buritonul plane at the rubbột, what is the velocity of the rabb

15 marks] 2. An electric fm, of the type made to stand on the ground, thin s circular base of diarretes 500 m. The centre of grantly eď the fan is 8000 mum above the centre of the base. It tracapocted on a lorry with a rough floni, and the fala not fastened to way support. Katuning, then sipping doci nor angle of the repent Incline up which the lorry can go wrifasta uwed without crusing th

The crow action of a terenur daru in tight led criangle XYZ. drown in Figure 1, X2 - A. 2x. The weight of that dazt ka W = khe. scherm K, à ass etmitants; W sett at a distans of

from the vertical face of the dam. When the depth of water in the reserate di the force on the vered fe of the dam due to 'water pressure ti Fed where e in constmat; & sets horizont ly at a disiason of ¶ above the base. In practice, the dem ja no endowed that the ressaltant, of Wand. F always penes thronagh P) where XP = 12 = Qè: What is the art value of in terms of è, A and 2?

water level

12.

The co-section through the centre of gravity of a Si trangulat" pse

equilateral intangle ABC of side, de maires. Its weight in. 1 Newton and it stands with the edge containing dom Tough.horizontal ground wird the elpot Lootslaseg - B gcnt = voeth vertical wall as shume un Figure 4 Tangle AB m. with the horizontal

(1)

If the cytona

kanung equalhuan Rod the coefficient of trichow belacan-ihr prism and the ground.

Akarże &W' newtonsa ja then applget downwarda ♫, where #15 - Je metres and 42, * a metres, le a direction perpendiculat in the Find, an arctangular feet contning "BG" Mums if k-and W. the normal reletions un The prismat về anỏ ♬ sad the filcilum at the Bword.

lenco deduce the greatest valve of

Fig

wiki equilibrium.

( macka)

Figure 4+

END OF PAPER