1977-03-18 — Page 28

買四第張七第日九廿月正年巳丁 WAH KIU YAT PO

1977中學會考試題預習專欄

明德社主編

生物(十九)

梁永華

Q-94748244

BIOLOGY (19)

REVISION TEST 6 -suggested

answerS.

Multiple choice questions:

1.(B) 2.(A) 3.(D) 4.(A) 5.(C)

6.(E) 7.(A) 8.(A) 9;(D)10.(E),

II Conventional questions: 1.(a)(1) Tympanum.

(11) The tympanum vibratës

when the aound wavee fall on it. It in turn causes the malleus to vibrate. (b)(1) L: malleus, Ms incue.

N: stapes.

(ii) Deafness may be caused if these bones become fused. 10

(a)(i) The narrow eustachian tube connects the middle ear to the pharynx and serves to equalize the pressure on the two sides of the ear drum.

(ii) A great noise causes. a great change in atmosphe eric pressure at the ex: ternal side of the ear drum. If the middle ear were completely closed, variations in atmospheric pressure would cause 甘 painful caving in of the ear drum. Opening the mouth can allow the pres- aure in the middle ear and external air to bal- ance 'thus preventing the harmful effect on eardrum. (d) The following conclusions

can be drawn:..

1) Structure. S (cochlea》

correlates to the pick-

ing up of aound waves.

ii) The lower part of s

correlates to the pick-

司查惓靜查明

代購交車三。

理電吉位房

和燾環粥

限記售塊廳3

公地詳幽有

機印

讓刷

桔

ing up of high tones, while the upper part, correlates to low tones. (e) Since the three soni- circular canals are

arranged in three differ- ent planes, a movement of the head in any direction will stimulate the move- ment of the fluid in at least one of the canals.

Thus they are sensitive

in detecting the position of the body.

2. (a) Tropism is the growth

response of nonmotile

organisme to directional etimuli.

(b)(土)

plumule

radicle

radile plumile,

radiché

A

(ii) Auxin. (iii) The raduoles of the

seedTings all point down ward and the shoot grow upward. This shows pori- tive geotropism of roote and negative geotropism of shoots.

(iv) This response causes

the anchorage of roots to the soil ac that ab- sorption of water and mineral salt are possible. It also allows the shoot to grow directly upward. 3.(a) seedling A box I

seedling B box III aeedling C - box II (b) Seedling A: since it

growa in darkness, it gets a weak stem and small yellow leaves. Seedling B: since it

靬麵[棗餅餐

grows in an environ ment with equal ill- mination, it gets a healthy stem and normal green leave5- Seedling Gt since it

grows in a box with a small window, it bende towards the source of

light because of the

positive phototropism of shoots.

【飽 讓飽| 西西

炸 餅

七匪格個炸

店 将有出一機扣

奶爐包大

區

新

郭日僑華

(a) The radicle can te di-.

vided into 5 regions:

Root cap- It is to protect the meristematic cells just above it. Growing point- It is the

meristematic region. where mitosis is most 'rapid.

五期星

Elongation zone- It is the

region where newly form- ́ed celle increase' in ' length.

̇Root hair zone- Some epi-

dermal cells of the piliferous layer protrude to form root hairs for absorption of water and minerals.

Maturation zone, the cells

become differentiated into specific tissues such as cortex, xylem. and phloem.

日八十月三年七七九一股公年六十六國民籲中

en 15-19 are studente. They are economically inactive, 6. The mobility of working youth in both occupational and geographical sense 19 Likely to be high since they are more energetic. dynamic, aggressive, adapte able and better educated .with. general and technical

knowledge.

7. The consumption pattern. of youth affects local en.. trepreneurs' decisions in production and marketing of goods and services.

8. An increasing percentage of the working youth becom- es mid-level managers and entrepreneurs since they are better equipped with managerial and technologi-. cal know-how. This helps stimulate the growth of

(十九)經濟與公共事務 Hong Kong's economy.

孔繁盛·

Economic and Public Affairs.

(19)

Youth and Hong Kong's eco-

nomy

1.Youth is generally defi– ned as the group of people.

In who are 15-24 in age. Hong Kong, 19% of the whole population are within this group.

2.30% of the economically active population are youth (A person who is prepared. to be employed or being em- ployed is said to be econo- mically active),

3. More than half of the youth are economically act-

4. Half of the working

youth are mostly of unakil- led and semi-skilled work- ers.

5. 92% of those aged betwe

9. Youth are innovative and creative in keeping local exports competitive and flexible.

10. That the young labour force can learn new know- ledge and skills easily makes division of labour possible in local product- ion.

Specialization can also be enhanced.

The vital part to be played by youth in relation to the changing character in. Hong Kong industry

1. As Hong Kong had been changed from an entrepot to an industrial centre, youth plays an important part in industrial production which. is vital to the rapid indus strial development of Hong Kong.

2. A large number of the

young labour force are emp.. Loyed in Hong Kong's major export industries such as garments, toys, electronice

意园|

鋐舖

·號者 附客 大願多全书 沿舖 有直原

玩均雙商 料理

K墩

工廠排位三現舖

羊小門

工廠

11

四搬酒

萬

[廉

除風骨料 藥元長期

南意單磡近 洽請車碼紅】

○頂行 電好伙快李成漫土 近Â入治 小區瓜

三百 六數和

土

千六廠瓜:

廠衣製冷夜 夜冷製衣廠

園

財VC料或全盤,

官塘鴻圖道十四號

手袋

消平 拾 球 氣懌打,銀針

四酵母

難門括 再四活特作賴抽脚釘變

批 大 金地湖三餐單計對中非佛打人飛馬拉

機車斗仔車大帶針織布美國裡布線球牛角扇吊 陳

!四十四號地下。

·雙赛程!八有期嘯立!

工場

六街

園

育教僑

and tertiles, These indus-

ion.

tries, which are labour- intensive, adopts an incre- ased extent of mass produc- tionmethod and specializat-

This has led to an increasing demand for young workers since they are usu→ ally skilled or semi-skilled 3. The increasing. emphasis. on the quality of, product leads to the demand for those young workers with advanced knowledge and tec-

To cope hnical training. with this changing charact- er, apprenticeship schemes, . vocational training centra

and technical institutes have been set up under the co-operation of industria- lists and the Government. This helps to provide more skilled labour with train- ing.

4. Since Hong Kongis econom my largely depends on manu- facturing industries, youth should be well prepared to take up blue-collar jobs instead of white-collar jobs. This explains why career education is import- ant in secondary schools.

The problems of youth in relation to Hong Kong's economic affairs

1. Youth have the wrong co- ncept of preferring white- collar jobs to blue-collar jobs.

2. Many young people tends

employment or study.

3. Youth have the wrong co- ncept of treating work as a means of earning money only 4. Youth have less patience with their jobs. Thus, a high mobility of labour is. created.

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