1980-01-16 — Page 31

of the maķe,

WAH KIU YAT PO 報日僑業

(2) Meiosis occurs in the

ovules and the anthers of the flower.

目播育教頁三第張八第 日九廿月一十年未已曆夏

1980

中學會考試題預習專欄

生物

(五)

明德出版社梁永華提供資料 BIOLOGY (15)

Lenng

(Mill & Dale Press Ltd.)

Unit 117 Perpetuation of the

species

(a) Name the organs in which

meiosis occurs

(1) in man and

(2) In Bauhïnia.

(b) What is the importance

of meiosis to these. organisms?

The following diagram shows a half-fløver and a longitudinal section of the ripe lop-sided fruit developed from the flower

1. FLOWER

petal

stigma

style

sépal

receptacle

ovule

Ovary wall

peduncle

II FRUIT

aborted C

(a) Describe a

common wấy, to prevent self-

flowers which have

similar relative.

position of the anthers and the

stigma.

List two disadvantages of self-pollination,

(c) Name the parts of the flower that give rise

to the structures A, Band D

(1) (1) What is structure

(2) Describe briefly

how it is formed.

(é) (1) Suggest a cause

for the aborted C

(2) Comment on the

relationship

between the growth of C and fruït growth,

(1) State three advantages

of seed reproduction.

ANSWERS:

(1) Meiosis occurs in

the ovaries of the

female and the testes

KRI

「姐講幹葳」,四十分(祗緻吃翾草澡!),

牙齿

告

告,今日粮,四十五

四時卅分,天氣報

五分,「翡熱劃場」之

「網中人」,

·八時,「名劍風擺

"九疇+√数樂今宵

·十時卅分,新聞燈

「中央市塲鍅亞崴 頴哈—心。簡報,天氣報告(殺瓤節目,卅分;天須報大霧」:「藍衣磴士]

六時,主臨萬邦話|-四十分·「貂 告,四十五分;明日節

十一時,新聞簡報 頂齿,音處處哦,

HEER THE CP-SFER BROKE) • RT AU 【膈」 卅分,新聞簡報(做(觀賞心樂事) 粤曲。 - BEARYKKER

4)

卅分.新聞簡報,(桀,七時卅分,我地熱

三時,全日播映完

十二時卅分,『等

{*EX]:

·夜一時卅分,

番风力球賽事直至完場

語長片「鐵證」

“十二時,新際簡報」,與你在一起,卅分,

十二時,新專輯 爲止及報導香港賽馬會

(b) Meiosis is a type of cell

division. The daughter

cells produced are not

genetically identical;

and this means that the

offspring produced as a

result of sexually! reproduction are varied. This variation allows the species to adapt to changing conditions or

to move. to a new

environment.

The common way is for the anthers and stigma in the same flower not to ripen.

same time. at the

(b) 1. No variations would

arise since the offsprings have similar genetical compositiona as their parents. The species may become weakened after a long period.

(r) As styles, stamens and

sepals.

B: receptacle

D: peduncle

(d) (1) The seed.

Pollen grains germinate on the sugary stigma and pollen tube grow's down the style, towards the ovary and into the ovule Male nucleus passes down the tube and fuses with the egg cell to form a zygote. fertilized ovule

becomes a seed.

The

The ovule had not been fertilized.

Seed and fruit growth are related. If the seed fails to develop that part of the frnit adjacent to it also fails.

(f) Three advantages of seed

reproduction:

1. Direct transmission of

disease to young planta Is avioded.

Variations are possible and this leads improvement of species

under natural selection.

・ta··

Dispersal of fruits.

and secds is possible.

over a long distance,

地理

(十五)

明德出版社李婉儺提供資料

Geography (15)

Y Lee

(MILL & DALE PRESS LTD)

Questions for Revision;

29. With the aid of large,

clear diagrams, give the differences of the underground water in the form of fiEYSER and-

ARTESIAN WELL....

ANSWER:

告告分·劳

四及一般兆赫 六時,新聞簡報及

」,卅分,「足球圈一

益養馬實況。

黹英國廣播躄台導新」「仙」第匕向至卅

500.

香港第二台 甬菜及臨殊有獎。

(立雅聲調)尤 十五分,妙韻旋律,卅天氣報告,早晨老友記

十一時,现毐你嘅

天氣報告,五分、「朝分,主。

一時,午開新聞,

十時,貝茜笑點,電影欣賞」:「四色花 九時,奕藉官播室十五分,「吾妻十八歲 」,四十五分,「午間

“十二時,紗租客心一號」。

「低」,卅分,「跳飛機

·五時:「世界食话

一時,宮爭遺風,

告: 四十五分,下河

SENDES • TRE) •

漁民天氣,國音樂。

六時 -「泡氣學生

梁聖皐旋,十五簽

·七時,唐綫「朝

┐天氣報告,(繼續阜談 卅分,天氣報告,好降 二時,音樂欣賞-

共」,甜牙,新聞及天

氣報導。

天氣報告,批發,天氣 商業第一台 路),形分,帶來光

·七時!「稟告」

報告:.

·凡告”斯分,新聞福報

報告,四十五分,天氣 六時,新聞簡報、簡報,一推出早老友 八時,繼續朝朝第一簡報,漁民及海域天氣 九時,新聞簡報, 聲平旋,十五分,天氣 報導, 《 哈早八早老友記》, 哈录 重卅分,新聞,音樂點滴。.. 三時卅分,天氣報

及天氣報告,繼續「朝 七時,新聞簡報,精科及老友記)。

五時卅分,天氣報」。

TALBE (BESEFB-) I 八時,新聞報告。維賞心樂事)。 ,天氣報告,五十分,卅分,新聞簡報,《2 當心樂事。卅分開

NCORE

DIAGRAM · SHOWING

THE WORKING ĐP GEYSER

Reservoir of heated ground water.

Steam accumulated

Superheated steam (these heated up ground water)

Downward movement. of water

DIAGRAM SHOWING THE WORKING QE. THE ARTES LAN, WELE

Rain

Rain

Artesian well

ter

table

And Aquifer (permeable ruck

Impermeable rock

Impermeable rock

ater table

Characteristics:

Geyser:

a

Geyser is an intermittent fountain of hot water ejected from hole in the earth's crust: with considerable force, accompanied by stean, Some

Age Shout at regular

intervals, other more

irregularly and spasmodically, Artesian Well

Artesian well is a

boring put down into an

aquifer in an artesian hasin;

if the outlet of a well is at a lower level than the

water-level, water will rise.

in the well under hydrostatic pressure.

Mode of Formation:

Geyser

From the mouth of geyser, there is usually a vent or a large fault line penetrates deeply into the earth. The vent and cracks around are filled with water. Superheating in the long, bending vent by hot lava

唱」,卅分,好歌分,新開簡報及天氣報

西時,新聞簡報,天氣報告,五分,一朝

| IKEJ - ER- TI

「八時,「一路兩伙

台

WI-

·華南海域天氣報告。」「節目

五分,「中國民歌選唱:七時,「澍長沙 KS BERON BROECKERS FREE

-九時,粵語長片「

七時,生活與你。願盡寶遇仙」。

十時卅分:「神勇

·十一時卅分,一科

K

十二時,一射殿

氣報告-氣窖置看,卅一地導」。

合「多日鹊」第五同。 旋律」,卅分,悲歡離〇五兆赫

一天氣報告,进梃「下午

天

三報二

氣報告 -

午旋律」,廿八分-天「夜笙歌」。

三期星

日六十月一年〇八九一圈公年九十六國民華中

causes the build-up of water

pressure at a temperature

above 100°C, until suddenly

part is coverted juto

super-heated steno, anat the water in the upper part: js. violently emitted, Confer water fills up the vent again. and the entire process, goes on in a cycle,

Artesian Well

Artesian weli

special type of well. There must be three layers of rock, With the permeable layer or aquifer lying hetween two

vara and they impermeable lavers, must be in a shallow synclinal basin or dip in the sane direction. The layer of permeable rock is exposed at one or both ends in a rainy region. Rain falling at the outcrops passes through it and is trapped because of the impermeable layers above and below it. Gradually, the underground water in the permeable layer will increase and the water-table will rise If a well is drilled into the aquifer, water vill gush out provided that the pressure enough.

Nature of Water

[Geyser:

The water enitted from a geyser is usually trapped locally It seeps down through the vent or fault. lines in the area.

Artesian Well:

The water trapped in the aquifer of an artesian well is the rain water falls at the rins of the basin, usually far away from the velk,

Uses of Water;

Geyser:

The greatest use of the boiling water is piped; to generate electricity known. as geo-thermal power, Artesian Well:

Water trapped from the artesian wella nostly serves. as drinking water for livestocks, It is unsuitable for use as irrigation water since it contains too much dissolved mineral salts which poison the crops.

Location of Occurrence: Geysersg

Geysers occur in volcanic region, The best known examples are those of New Zealand, Iceland, and Yellowstone National Park,

U.S.A.

Artesian Well-

Artesian, wells are found in artesian basins, The best known artesian area is the Great Artesian Basin of Australia. Another large one is in the fireat Plains of the United States from

W. Dakota to Kansa9,

便格及長沙灣居房本地 漩安殿」......

400

$300:

£200

ANSFER:

ContourMİ

in netr

spring: Onwallow hole dry valley

What is the main type of

rock-that made up the "region"

Account for the formation of the characteristic features A and B. Name the features you would expect "to. underground: #t... B.

a. Name of the rock

The area is mainly made of up of lime stone. Pormation of the characteristic features:

Spring

It is a vauclusian springformed where limestone overlies:and impermeable rock layer such" na clay or shale. The joints of the overlying limestone are easily

y opened up. It is j partly due to its previous nature and partly its chemical composition. The well-developed jäinta

a water to

enter easily." The vatér, especially rain water which is usually slightly acidic as carbon dioxide in the air has been dissolved, acts actively upon the rock. Joints are there fare. widened by solution and caves and underĽTURE channels are thus developed down to the impermeable bast base of the formati on. The latter holds up the water and allows it to drain out as a spring on the scarp slope

B. - Swallow Hole

Ing Limestone area the intersecting points of the "major joints may be

widened by

by solution to form vertical openings. Such shaft-Like openings. are called swallow holes through which surface streans enter. Features expected to he seen underground-at ́B ̧

44 Underground at B, the swallow holes may lead to the opening of tunnels and, underground cave rus inside which stalactites, stalagmitea and underground: streams may be

告告分

朝天

found,

LUKE

今樂府

關島,新聞簡報·麗的第一台

鼈

[KESU - (URVE

PO-GENE

天使》,汧分,新聞

* - (BEREKE)

九時,節目介紹,

三分, 節目習告斂止。

香港第一台本地及外效,在一起),

INKESO-SEKS HERR - (EBES

二時,新聞簡報, 一年青人時間·卅分,新之分,新報導,4

. 十二時,魔莒介紹

K-EXER-THOO.EE) 及外來生獨價格皰域,卷卷八口,泄分,新 (中破 J七九芏千 僕格及及沙海思及本地卡時,新聞簡報, 高報,織積年青人五分。好戲護器:刁蠻

KK-1

·三時,新葉簡報+

《甜隶年青人時間》、

: 四時,下午茶·

,天氣報告,商汐,卅一氣報告,終於一點唱二三,新年,新聞簡報汧分,新聞簡報、(組分,狼族。

6-REENAKKE OO

(STE<IE) •

五毕卅分-- 大件事

四時,新聞簡報-

、

告,潮汐

當七時,新聞天地,吓,一樂也」,古五分氣報導,將分,雞站第卅分,新聞簡報。(繼貂,卅五分,醒目仔純

花:點棺兵兵,銀河

六時卅分 - 節員介

年青人時間》。

遞

大白鯊

,卅分,當年今日, * 十時,菊頭鷹婺間

-SER..

八時。怒劍鳴!

七時卅分,新明報

湾行前報導 ::

∴ 干時新聞商報及

十二時,新爾簡報

AKWERTRES EJ

第