1974-01-22 — Page 18

貞二第張五第日十三月二十年丑癸瑟夏

WAH KIU YATI

報日橋 銀日僑華小二期星

日二十月一年四七九一公年三十六團民華中眘教華僑

B短答题!

1974中學會考試題預習專欄

17.下图為一株馬鈴薯图

1974 中學會考試題預習專欄

1874 中學會考試題預習專欄 堅道書院主講

sin15:

> 1.41

生物科(課程甲)(十一) 梁景桓

科(十一) PHYSICS (11)

麻烦榮

The minimum refractive index of the glass for such use is 1.

生物科(課程乙)(十一)

本期溫習範圍

1.種子植物的形態構造(一) 山根的構造,功能与专熊 茎的構造,功能变鳃 (在温習過程中宜小心比較單

子葉植物-5双子葉植物之選 二練習題

A.選擇題

A氯孔 B.皮孔(排水孔(答¿题】 1.木本幼女嫩的枝條表皮常具有:

PCA:B) Q (BC) RCAC), S (A), T(B)

2.木本茎老大的莖幹栓皮上常具有

P(AB)

3 +2 + (B. S. (A) T(B)

P(皮房) Q(内皮) R(维管束)

S(形成层):T(髓) 4.下列那一項敍述是正確的

P.春材色淡而润,Q秋村色深而狹

R.心材為活细胞组成. S木材部是由 形成层细胞分生特化而成,下邊材含水 分較心材為多

5.形成层新生的樹皮部分是以

P 皮层,Q 木質部,R 木栓层,S,内皮 丁皮部為主。

6.莖内無形成层,而且维管分散,這是屬於 P.單子葉植物Q本双子葉植物

R草本双子葉植物,S裸子植物 下蕨類植物

7.支根是由P.根毛茛京而成

R.成熟部之柱鞘育仲工 下由胚根营育而成。

根据下图回答 8-12题

Q延長部伸

8.上图是下列那一項的切面图

P.草質根主横切面.Q本本根之横切面 R.單子葉植物基之横切面.

S. 草本双子葉植物之横切面 丁、木本双子葉植物老墨之横切面

9. 植物体中的水分是由图中那一部

輸送!

Pla), a(b); R(c)y S (d), Tiel, 10.植物生吹級生長是由於下次那

一部分之细胞分生的结果

P«), Q(a) R(e), S(f); T(ane) 111 植物体中輸送有機养料是因中那部

p(a)j GCb) R(); S(d);T(e),

112 澱粉鞘是指图中那一部分

pray & (es R(d); $(C); T.(f), 113.樹皮容易制落的原因是

P. 被鮮鬆軟、Q、形成层非常柔鞨,

R.表皮易乾死S.髓部水分太多

T. 度层均為薄壁细胞之故,

14. 根毛主要意義為

P支持作用Q固定作用R節制水液 S擴大吸收面下根本無作用。

1.5. 下列那須敍述為根与室在外形上的

主要區別!

P.棂生於地下,而產生於地面上

Q根具有根冠,而基無根冠.

R根不具節茎具有節

8.根具有根毛,莖無毛

T根能產生支根,有茎枝、

16.浮萍的根属於水生根,其主要的

特徵為

P.無支根及根毛,草箕柔軟 R髮生長奌 下生於水中

什麼着分,如何 檢定!!

(3)試比較塊茎5.球茎有何不同 (4)試绘一種根鉴之形態图註明各 部名称,並指出你所给的植物各

18.何谓维管束?維管束由那幾

部構成各有何功用

19.何谓年輪,其成用安在?何以

以热带地方之樹木大多缺乏牛輪 20.試简述下列各项

(4)形成层(B,反作用木

((()不定根(四)樹皮

21.試比較 艮5茎的中柱有何不同 三上期答案

A選擇題:

(A).

B短答題

7.抗原:就是侵入寄主体内的異類 蛋白,換言之,即侵入寄主体之病原体的

蛋白質部分

抗体:当抗索侵入寄主体後,寄主体 便產生一種排斥抗票之特要成分 根据抗体作用的不同,可分為下列幾類 (a)抗毒素(b)溶菌素(c)凝集素 (d)沉降素(e)調理素

抗体具有專一性能使它们对同一抗点继 续保持免疫性,因之可维持長期免疫 相反而言着抗体缺乏專一性,則同樣亦 破最寄主体内所需的蛋心算

8. 亂用抗生素將會導致下列嚴重後果,

(a)可能引起過敏性休克..

山若為口服抗生素,「能殺滅陽中 全部細菌而集王維生素B類之缺乏 (C)能引起细菌的抗药性!

抗生素就是從细菌或黴菌分離方 来的一些物質,這些物質能抑制或 一殺滅另一些菌類的生存

9.(此題就各同學自己推論) 10.填-

如下。

1. 自動免疫

被動免疫

Compare the structures of a typicɛl inent pollinated and a wind-pollinat- ed. flower. Account for their difieren-

ce.

4. Distinguish between a fruit and a seed S. How are fruits, and seeds dispersed?

Give examples.

Explantion

3. Since the question used the tari

•comparer we must remember not t感

just list the characterastica. of each and ignoring the comparison ani explanation..

6505 ánsect pollinated flowers depend

a) short sight-The focal length

of the eye Lens at its rest

state is less than the distance to the retina; Therefore, images of distant objects will be formed in front of the retina.

Since the focal length cannot be increased by accomodation, the distant objects cannot be seen: olearly by the unaided e

eye.

long sight-- The eye lens at its rest state is not convex enough: so that the focal length of the lens is greater than the width of eye. Therefore images of dis -tant objects will be formed behind the retina.

on the vieite made by insecte to help b) Correction for short sight:

bring about pollination, they must

E some sort of attraction to lure. such visits. Thus petals are usually large, bright coloured and scented with the presence of neotar and conspicuous markinge or honey guideo to show insects where there is reward for their visit. With wind-pollinated flowers, there is no need for such attractions so the petals are small unattractive, unscented and without nectar.. (11)Insect-pollinated flowers must be

open when suitable in sects are active: so some open by day while others by night. But wind-pollinated ones must be accessible by wind so they usually are developed before the leaves are developed thus making free access for wind to the flowers.te (iii) As the pollena of winad-pollinated ones must be carried by wind an they are small and light and plentiful, this enabling the wind to carry them away and the large number accounts for Joña during flight in ain. Their

stigmas, in order to catch the pollen- laden wind, are uaually feathery and protrude from the corolla, so are the anthers as they must be easily wind- shaken if pollens are to be carried

away.

But insect-pollinated flowers need not worry about flight in air. Their pollen are to be carried by insecte so their pollen, though small, are heavy with rough surfaces which would readily adhere to the hairy legs, and body of visiting insects. Their stigmas must also be sticky ao as to hold onto the pollen.

45 A fruit may be defined as a structure

which encloses and protects the developing seed and sopetizas aids its dispersal. It is developed from the gynoecium and some times includes

additional parta such as receptacle,... the inflorescence and part of the axi日 A Baed is developed from a fertilizad ovule and encloses the enbuyo. A fruit has two scars, that which was attacked. to the flower stalk and the remains of the stigma and atyle, while a azed han. one, that which was attached to the placenta. A fruit has a covering of parioarp while a seed is enclosed in the testa and togman.

5. Flowering planta exhibit divices which

tend to ensure seed dispersal. The whole or part of the fruit which -contained the seeds or the seeda alone may be dispersed. The angents which bring about disporeal may be j a part of the plant, and animal wind of water.

1.把毒性較弱之病 1.係將别種物物 原体或類毒素制 | 侉產生的抗体制 成疫苗,直接接種成免疫血清注射 入人体,使產生抗体,入人侉藉現成(1)Solr diapereal- 【苦生免疫 ̇之抗体而獲得免疫

有效免疫期间長不能迅速贲生免疫力 可持續数月或数年自注射後户营出作用

3.免疫力持續期: 3免疫效用遲緩

不能用於應意

短,僅有数週效用.

4. 可適用於預可適用於紧急

防疾病之营生治療用

111 牛羊等動物亦如人類,亦會因天花 病毒侵害而罹痘瘡,但毒性比較 温和只是局部性罹患痘瘡不致 危害性命,惟人類罹此疾,則全 身昔痘疱毒性猛烈而致命

若將人類的天花病毒体,接種 於牛隻身上,則仍為局部性苦痘疱, 經在土佈上接種後,天花病毒件 毒性減弱称為“牛型人痘”

再將牛型痘”回植於人体伎 人類亦產生温和性局部性的出 瘦,不致危及生命,但痊癒後却 而獲得了病後自動免疫

因此接種牛痘能獲得預防 天花、純然是利用毒性減弱的病 原体作為疫苗,以刺激人体,使

·体因而獲得病後自動免疫

(a) Self explosive mechanisms ege

legumee (pean) Caused by the unequal drying of tissues of the pod wall (pericarp), it splite and twiste into spiral form, this

violent movement ejects the seeds.

(*) Fruite that belong to the ailiqua

(wallflower)or capsule (poppy,

snapdragon) type expel their Baads by shaking them out through poras. (Gonser mohanien.)

(ii)Animal disperneli-

(a) cxternel dispersal fruita usu possessed hooka" or other outgrowthe which enable then to adhere to the fur of passing. animals. eg. Cleaners, Agrimony, | Herb bennet, Avens. Othere auch

as seeds of man-h plante may adhere to the wet or muddy feet. of wading birds and are thus carried away..

ii)Internal dispersal - fruits are

eaten and the edible part digestbd. og. Succulent fruita - berry straw-

berry, currant, blackberry (aaed enclosed in stone'}

(iii)Wină dispersalè wither the whole

fruit or the seed alone may be wind- borne, Usually, due to the presence of outgrowths of the pericarp ug. The samaras of Ash, Elap the double samara of Sycamore; or the pỡ muqa of fine hairs og. pappus of dandel- ion; or the winged seeds of pings or the long silky hairs of cotton and willow herb.

Pre-reading Text:

Germination.

Spectacles of concave lens of suitable power can be used to make'the light rays from objects more divergent before entering the eye so that the image formed by the eye lens mcy be brought to the retina.

short sight

short sight corrected

Correction for long aight: Spectacles of convex lens, of suitable power can be used to make the light rays from the objects less divergent before. entering the eye so that the images formed by the eye lens mey De brought to the retina,

Liong aia

Long sight corrected

Focus

V-50cm

第1000

Leza

1.The focal length of the lens (30:100 (on,

2. The height of the image is

8 cm.

3. Since the image is upright

it is a concave lens,

140°

b) Let u be the critical angle of the glass of the prism in a).

Since total internal reflection at the face AB

sinc sin

ain45

Refraction at AB:

siny

sinr

dieda

r= 29 24

Sinc ADFB is a cyclic quadril-

ateral,

600

30°36

Refraction at AC:

sini

1.07

56 12

iation of the light

(35

+(58°12

Problems for next week

?ay Dietinguish between transverse:

waves and longitudinal wavesj. and give one exampl, of each. Draw two pairs of uiujrams. showing the difference between transverse waves differing in (i) pitch only

(ii) loudness only

haplain why the same musi.cal note played on two different instrumentà sounds different even when it has the same emplitude.

Show how a gold leaf electros- cope can be positively charged by: the process of inductiori using only a negatively charm. ged rod.

Cunplain the term 'polarisation

any state how it affects the electrical.behaviour of the

cell.

1074 中學會考試題預習專欄

英文科 (十一)(横) 蒔雅

English (11)

(Continued)

To write on topics such as "Pride goe be fore: a fall", or Hugblenase is a prerequisite for success", quotations such.asr

"Everyone who exalts himself will be | humbled: and whoever humbles. binaelf

will be exalt

1ted.

may be used.

It may be that sometimes we write the f introduction by combined. methods. The following is an example of introduct ion of "Humbleness is a prerequisite. for anode6at.

It was racorded in the Bible that a conceited Pharisee bragged of his own good in his prayer to God in the temple while a tax-gatherer, beat ing upon his breast when he played. cried for the mercy of God as he felt shameful of his own sin, and he dare not even raise his eyes to heaven

Everyone who exalts himself will.be humbled and whoever humbles himself will be exalted." remarked Jesus Christ upon the matter.

A short story and quotation from the Bible are used in this case.

In the introduction, verses may also be used, if proper words are useds

"Gather ye rosebud, while ye may, Old time is still flyings.

And this same flower that smiles todas To-morrow will be dying."

The above verae of lobent Herrick, for example, can be applied to es, ays entitled "Time and Tide Wait for No Man", "Make Hạy While the Sun Shines". For the like.

d. By Striking Statement:

This is to begin our essay by a very short and simple.s ntence which is so planned that it attracts the at. tention or arouses interest of the reader.

(To be continued)