1966-02-10 — Page 15

英中 試題預習專欄

英中会考

CITY HALL

日一廿月正年牛芮廣式

WAR KIU YAT PO

華僑教育

一九六六年度

中中考試題預習專欄

生物科

物理科

(X) 蔡明。

Biolog

力學問題解答:

Exercise 6:

inners to exarsi

甲部填-

題。

“以案,反之,速度改变時速率不一定改变。

解釋:

根据下列两公书。即很容易得出此 结果

U = 1, + at

其中以高初速度,『為來速度,為時間 “為佳移,又為这率亦即加速度。

B西球之後量相等,A球以速度向静止 之B球撞去若撞後A球静止则B球之逶 房為止,若子沐之後量為A球之几倍则 撞後之速度將為/n

解释

B球被撞後之速度為6到根据 动量不滅原理

P1 = Ma

Ma = Mo

Ma

1. 6) What is the diagram of the plant represented for?;

Ans. This disgram represents for a young seedling,

b) Raise the parts from A to Ţi

A: Plimele

C: Testa

E: Cotyledon, stalk.

Of Lateral root,

Is Root cap

B: Epicotyl

D: Cotyledon.

(Ft. Main roet

Hi Boot haiTa

e) What are the functions of A, D, H and 17

Ana

̇徐錫 • *

A Plumle is to protect the growing point and tears foliage leaves

to help for photosynthesis,

B

I

Cotyledon acts as a food storage for the embryo.",

Root bears are to absorb water and dissolved mineral salto. Root cap serves as a protective covering for the root tip to Cerow and drill through the soil.

d) What are three conditions needed for germination,

Ans. The three conditions for its germination arai.

1) Sufficient supply of moisture (1.8, water) 11) Suitable temperatures.

111) Air (mostly oxygen, feeded,,

What is transpiration? What is the instrument used to measure the relative rate of transpiration and how it wo Stute briefly the structure and functions of the stomata and the pool hairs. Diorelati to transairation-

Transpiration is the process by which water is evaporated under condition from a terrestrial plant. The instrument used to BÚTI -the relative rate of transpiration is a potomster. The petereter

can be used to measure the rate of loss of water, Trim a freshly_cut shoot. The apparatus may be shown as follows;"

四期星

日十月二年六六九一媵公年五十五國民中

The battle and the capillary tube AB are full of water," The reservoir als contains water. The apparatus is placed under various climatic conditions e.g. in a draught, or in still air. Water is lost from the leaves on the shoot, and consequently from the bottle. This loss is shown by the colimm of water retreating along the capillary; The rate of water-loss can be. menaured by timing this movement, The capillary tube can be refilled by releasing water from the reservoir into the bottle

This aparatus can be applied for comparative measurements. The shoot must te freshly cut under water to prevent the formation of air locks in the xylem vessels.

The initial reading in the capillary may sometimes be affected by the shook reaction of the shoot. So precaution should be taken. The apparatus shouže be set aside for a few hours before taking down the first reading so as

as inacarracy may be minimised.

The stomate are mostly found on the lower epidermis of a plant, lower surface of dicotyledoncus, plant and usually on both surfaces of monocotyledorus plant. The stomata are pores bounded by a pair of kidney-shaped guard cells with thick walls and abundant chloroplasts. The action of the stomata is to control the rate of gaseous "exchange of the leaves. The stomata can open and close, regulating the diffusion of carbon dioxids, water vapour and oxygen, in the day time or at might.

During the day time the chloroplasts of the guard cells can convert more sugar by photosynthesis so as concentration is higher in the cell sap than in the surrounding epidermal cells. Water naturally enters into the guard cells by osmosis, so that they become more turgid and rounded; this changing ahape makes them to become widely open., Exchange of gases in allowed to take place.

At night photosynthesis: se zmpossitis vecause as evorce Vr eonlight. The", guard cells loss their sugar by respiration so that the concentration of Cheie celt sapa are reduced; then water passes out of the guard calls, they become less turgid and the atomatal pores are closed, •The rate of transe, piration is affected by certain conditions, but especially by hot dry or windy conditions. Under high, dry and windy weather water is lost more vapidly than it is absorbed by the roots. This may lead to lower the water loss from the leaves,

The guard calls become flaccidi

The root hairs absorb water and isssolved mineral salts from the sol2 particles. The soil solution is more dilute than the cull map. The cellulos walls are completely perzsahle, Osmosis can take place between the root. hairs and soil partials containing water. Iouio balance of the plant la kept by the exchange of positive and negative obagas between the scl solution and the call saps in the root hairs and cortical cells of the nianid Smarcine for this weeks

I. Fill in the blanks to complete the fallowing stat muntas?

is the false foot of an ampaba..

is the external part of protoplasm in an aRÖNÖK)) is the substance which makes up the cell wall. SORTERKON As the gream pignant in the plants, 5) Angels in a BERWIE animal with a swe

dy the earliest representative of a root. Roots are wually the portion of a plant round under 5) The main functions of a root are to fac

9)

10)

11) 二

the plant and $0.

heart p

JAN 18 AD GODLmple emsisting of wodified staną ALLE "18 an example consisting of modifiaä laavak,

buda are those which do not develon until other... bums are destroyed. 12) A stoma la ▲ hale bound by a pair of

13) The collective terms of petaze and espals are

14) A stamen consists o

15) The pistil includes va

16) The female reproductive organ of a flower is termed - 17) The male reproductive organ or a flower is termed 16) The inflorescence includes

shaped

19) The 20 de protect the flower when it is in bud, 20) A fertilized evule of a flower later converts into 21) The ovary of a flower is to form

.22)

The methods of reproduction, or an amoeba are

2) The methods of reproduction of a hydra are

The methods of reproduction of a spirogyra aré and

3不同點力間之夾角愈大時其合力室

解釋

Ft 2 Fi Fi Cos &

式中R為厅石之力,日為其尺角:

0-90° 0增大。减少,故民却滅。

18038-90°

1增大;Coo員值增长,你R减心

☆将一重量為刀之物体,置於一光之斜面上, 若斜面之角度為日则物件对斜面之正压力

為WGe;使物体下滑之力為Sino:物体

下滑時之加速度為9Simo

解释如下啬,分為兩分力FoFoFo乱

斜面,Fo弄行於斜面

囉

则所為物体对斜面之正压力,F,為便

物体下谓之为肉酱可知

Fp = W Cor 0 YP13)

Fi- @500 (to $12)

2. (绝对单位)》 eng Sing

泰麵掣良好之玘車其速度加倍時,但車距离為原

米之四倍。

解释设汔車之後量為m,速度為7,路面之摩

培力為F,煞車距离為S.

到此汽車於坦平時之动能=/m2 此动能必须完全消耗於摩擦力

Ma Imp2 - FS.

因此

=27,

MP 5=45;

of F

祭

睛

6.质量各為及之两物体用绳相连而跨 於量摩擦之滑輪上,若大於m,则滑动時 之加速度為 m-m

9

M+M>

After fertilization of a spirogyre

The body of a mucor is called

21)

the methods of reproduction of a muçor are f

29)

process by which a green plant makes food from carbon dioxide And water under the presence of sunlight and

29). The three Baipafunctions of the leaf are for

30) The stomata are nors

mostly

fourti on

spidermis of a loafe)

Give a full description of the methods of dispersal of fruits and

«seeds. And try to label the diagrams of some named fruits and seeds!

each sulted for the vethods or dieporaal..

供本苻中手使用 綍訊教育司英語大易中心,已設強大量錄音較聲帶, 收聽 並有詳細講義供應 用鈴音機播出 學生可自由

: 此镐焊保典在普通金低用者,低用一個音被接出:

應自

一改中之最初階段 大部份小麒生獲 ←於本孽期靠祖「九牌八步院學生一将举行代

九龍八達英文書院 向正途發展,用意良善,頗鎮海快搔捲,交作品,又搭零由选 我蒩夠造迅速,同時法里不再需助於促指揮,永次節目包括 長業剂中,以近年來本袪學校交酒安全成,由文理小担任 《酹訊》九雅八煞英文養院監察食校特之七十多位學生組 組學校交通服務隊 作第三次公開演变。

中心旨在協助英格教師致學,及對彼感提供意見, 區志臂督察昨 技校演講,尚學校,只個不同用

德音之之分發事宜,由教育司到桌之過冗教育醞发育。 上述各畤音康,由去年設立之英語教學中心所製備者,

:用沖。運用該號練習,可改造學生之英文寫作.. 但此點練習,針對本港學生在英語發音上之一被困朗,有興 「演薄對變聽醫」,主要孫供中學使用,所用之字案,不鏽 吳材之祥息標賽,及運用此還材之說明書,亦將破音器。 綀習鏹只重游式,惟此堂練習係供寫作及演講時必快結 ̇「句子 式樣」內容,爲基本英路甜遘谋濳狲柽三鏻及 [奥芬巴哈,海頓、

∴"風來自三十步

正,在大會受音樂嘉 六星期六,下午八時

服書 ®

務院

·梅、秘書伍教完暨中學部具中共西社

·校長陳世涼、訓導主任對家傑、林府主民馬分工業中學 会午门專業」

香港青年管絃樂團

休夫人、奈說瑞、監誓蒙校長澳洲中、椰 束,參加琵舞者减;校董事長李太 劉間:

·妙語如珠,並置,至十一時許始告大围教育可樂

他的戏,本作,詳情可向九邵氏

演講,爲「道路安全與學生交通安全:德習無門渡星期三一 工作之警務處交通安全官區志賢齊活校: 露九龍巴富街市路, 「九)日上午十時,邀熬負責主投骸讀書志同拳參加,練習地點 下午ㄬ中ㄞ七中

定港

十靑

日管

定十九日公開演奏

·千餘人組成 基校音學協會組横之一將於本年二月十九日獎品, 時

鵝鬱年出 由港幣|

六個不同國籍之學生七 該開出三十多間翥校

(躪際]

(星期四)下午1 巴富街官立小學舉行

馬會官立工業

到時-在九巴:

【嘉熊典:獨時由

人工

解

= (mm)g (绝对单位):

喜加速度(-) S

Mi+m2

7 位 街量回量限

住能為意向量

8.向量而無向量之棱或商均為向量,例如速度 為向量,時間為要向量,其積位移為血量. 9.向量怕向量之棱或商均為世向量,例如力為向量,

加速度為向量,其高质量為其向量。

时间量气向量之性值不同,绝不可以相加或相 *退,但向量与向量之间则可以互相加減。

君以下尼之力水平作用於此物体上,於去抄後 其适度為5厘米,若加以下克宁直向上之力 像之上升,则方大利称其上昇之速度為(295) 厘米/秒

2.在升降机内以弹齒秤性以质量為一之物体 被牌童拜之讀数為可见,则当升降机停止時 有為上总当升降机以更秒10厘米的寻这么

敎署英語教學中心

製備錄音教材 供中小學使用

速度下降時,為~1克,若升降机以10厘米

临秒秒诗加速度上升時,為1102元活动 降机以每秒秒100厘米矛加速度下降時吧 17 0.8982

韓机で加速度為が,物降貭量だけ

~W" (mg + ma)/g (导)

故表计降机停止或以寻连度速上升和下學

a=c

W = mx

借升降机以每秒每秒10厘米等加速度上升時

Q = 100 837 / 6707

W = 1/7 C#

11029

当升降机以多少秒100厘米等加速度下降時

10=100厘米

W = 1 × ( )-

= 0898 L

"700

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