1977-02-04 — Page 28

真四第張七第日七十月二十年辰丙曆夏 WAH KIU YAT PO

1977中學會考試題預習專欄

明德社主編

生物(十三)

梁永華

BIOLOGY (13)

REVISTON TEST 4 Suggested

answer.

I.Multiple choice questions: 1.(A) 2,(E) 3.(B) 4.(E) 5.(B) 6.(A) 7.(c) 8. (C) 9.(D)

II.Conventional questions:

1(a)A: posterior vena cava

B: hepatic vein

C: hepatic portal vein D: renal vein:

E: hepatic artery

F: coeliac artery

* Garenal artery (b)(i) Xs deoxygenated bloody

Y: oxygenated blood.

(11) B: rich in urea; Ci rich in nutrients.

(iii)C: deoxygenated blood, rich in nutrients; Fr oxy- genated blood,less nutrients.

(iv) D: deoxygenated blood with little urea; G; oxygen- ated blood, rich inㄟurea. (c) Adrenalin (epinrphrine), 2(a) X : artery; Yi vein. (b)Artery- blood vessel. carrying blood away from the heart. Vein blood vessel carrying blood towards the heart. Portal vein- blood vessel that begins and ends in capillaries.

(c) The thick muscular and elastic layers allow the artery to stand against the high blood pressure.

(d) Valves in veins prevent the blackflow of blood.

Furthermore, the contraction_

of. the akeletal muscles and

the breathing motion of the

thorax help the blood flow.

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(e) It is because oxyhemoglo bin has a bright red colour. 3. (a) The functions of the

blood in man:

1:To transport nutriente..

oxygen, metabolic wastes. hormones and others.

2.To disperse heat and

regulate body temperature. 3.To maintain water content,

of the body:

4.To serve as a body defense

system (1.e.the immunologic al system).

5.To form clots over injured areas to prevent excessive. loss of blood and entry of geras.

(b) Plasma is the liquid, noncellular part of the blood. Serum de the 11ght: yellow liquid left after clotting of blood. Thus Berum is: aimilar to plasma: in most respects except that it lacks fibrinogen as well as other clotting materials.

Lymph has essentially the same composition as the tissue fluid. Tissue fluid passes into the lymph capil- laries becomes lymph. (c) Look it up in your text-

book.

報日僑華

re(a)" This experimental setw

up is endeavouring to verify that transpiration sets up a auctional force which draws. water up the stem from theroot. (b) The leafy shoot should

be cut under water. (c)(i) Transpiration.

(ii)Transpiration is important to plants for it helps to draw water up the stem and diaperse the heat as water evaporates.

(d) 1.high temperature;2,low

humidity; 3.wind; 4.high.

light intensity and 5%

relative high concentration

of carbon dioxide.

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5(a) This experiment is to

demonstrate root prensure. (B) The oil layer is added to prevent any. water loss due to evaporation./ (c) It is because the tissue

fluid in the carrot has a lower content of water than that in the surrounding. Thus water enters the carrot

(d) Since both the rate of

Steadily by osmosia. water diffusion and the active part of water absorp- tion is decreased at low

temperatures, the rise of

water level vill slow down

when iced water is used.

經濟與公共事務(十三)

Rconomic ane pita

Legislative Council

A. Functions

The Legislative Council is responsible to make laws, to control mublic- finance, to keep the law under review and to pro- tect the interests of the majority of the community It is the legislative... assembly of Hong Kong.. B. Composition

1.The governor is the

president of the Coun 2.There are four

officio members, namely the Golo nial Secretary the Attorney General... the Secretary for Home Affairs and the Financ- ial Secretary ..

3. The Council has 10 off-

icdal members.

4.It also has 15 unoffi− cial members who are distinguished citizens appointed by the Gover- nor for a period of 4 years. At the end of t

the term he may be re- appointed for the same period. Any member may.

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日四月二年七七九一层公年六十六國民華中 ★教僑華

be dismissed at anytime. C. Meetings

1. The Council meets once every two weeks except a. period of six weeks of recess. In September and October for every year. 2.At the beginning of the session in October, the Governor usually makes a speech in the Council. reviewing the past per- formance of the Govern- ment and discussing the future policies of the

·coming year.. 3.Motions may be made by

the official members/ the unofficial members, 4.The meetings are chai-

red by the Governor.

D. Decision-making in the

Council.

All decisions are made in the Council by amam jority of votes. When- ever the votes are equal the President(i.e. the Governor) shall have a casting vote: 3. The Finance Committee.

1.It is the standing.co−

mmittee of the Legisla-. tive Council.

2.Citizens can put their

suggestions or objecti- ons to the unofficial members of the UMELCO and the ward offices of: the Urban Council. 7 3.The public can express

their opinions by send- ing letters to the go- vernments, newspapers. and petitions to the Governor. 4.Discussions on radio

and: television can aro- (use public concern on.

the legislation. 5.Copies of the bills are provided by the govern- ment to the public so as to arouse discussion suggestion and critici The Office of the Unoffi- cial Mmebers of the Exe- cutive and Legislative Councils(UMELCO)

A. Structure:

1.It is a non-povernment bod

2.It consists of all the unofficial and offici- 27 montone of the Exe- cutive and Legislative

B. Functions Council.

1.To deal with public

complaints and grievance 2.To represent govern-

ment by explaining its

2.It consists of the Col-policies.

onial Secretary, the Treasurer, the Director of Public Works and the unofficial members of the Council. 13.It examines and assess-

es all government exp- enditures and annual budget of the Government. F. How the public takes.

part in the law-making process

1.Citizens can form group

or civic body to critic cize_bills and legisla- tion.

C. Powers.

1.It has the right to

question government of- ficers concerned. 2.It can have access to

documents if necessary. 3.It can challenge the

Eovernment's action if the complaint is justified.

D.

1.It has no.power to in− vestigate unjust court de anno

take any act-i

2.1

don (evg.prosecution):

even if there is an

obvious case of govern

ment- maladministrtion.

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