1972-11-30 — Page 26

報日僑茶

WAH KIU YAT PO:

四期星 日十三月一十年二七九一屦公年一十六國民華中育教徭華

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1973英文中學會考試題預習專欄

生物科

Biology (6)

Answers to the questions of last week

1(a). By reference to the colony of the honey bee explain the meaning of the social life in the animal kingdom..

(b) Describe, with the aid of diagrams, the life-history of the honey bee.

Ans(a) The social life is describ ed as human colony and those of some groups of insects such as honey bees, ants and termites.

In the colony of the honey bee, the queen bee is unable to organize a colony or to survive at all without worker bees. The queen bee appears in an establish ed colony, and flies out of the hive with male bees in chase on the nuptial flight. After that the queen is fertilized and returns t the hive to begin producing eggs. Most of the egge develop into workers, and as in the other so- cieties of some groups of insects. the integrating mechanism assurin that all members will be fed is the appropriate food in the colon; The worker is a builder of honey- comb. In addition the worker re- ceives nectar and pollen grain Brought to the hive or carries lebris and dead bees out of the. live, taking them off some distan

e and dropping them. A certain umber of wax-producing bees guart the entrance of the hive, inspect ng all incomers to be sure that hey are bees of their nolnav.

Thorax

Leg

Worker

Drone

Abdo

pupu

Queen

Larva

EES ))

The life-history of hive-bee

(a) What is meant by "altema ion of generations!?

(1) Illustrate the life over of a fern by using labelled dia- grams.

Ans

(a) The life cycle of a fem includes two distinct alternating plases or generations. A germinat- ing spore develops into a gameto- phyte(the plant body of sexual generation), which bears sex organi in which gametes are produced. The union of gametes forms a lzygote. A zygote develops into a sporophyte (the plant body of asexual generat -ion), whose characteristic funct- ion is the production of spores, Each spore produced by a sporophyt nay in turn develop into a gameto- phyte. b

~ Diagram of life cycle of

a fern

Spore mothe

cells

sporangia

Jorus

-Sporophyll

When the colony becomes too. large the nurse workers set aside a few eggs to be raised as queens When the eggs pupate, the colony begins to split up. About half number of the workers induce the old queen to leave, and they fly off with the queen to begin a new colony, The other half remains.. When the first new queen emerges, she may also be induced to leave with another group of workers if the colony becomes very large again. Either she or the next new queen, however, remains as the ner resident queen. As soon as one or the other is established the few other queens that may be hatching are destroyed. This process is

ow as swarming.

(b) The Life-history of a honey -bes

complete metamarobosi 8:

Mature Sporophyte

Egg stage.

The eggs are laid uy queen, and are laid one by one in the cells of the hive where the eggs have been cared very careful- ly. As in hatching, those laid in worker cells, develop into workers. in queen cells they develop into queens, while the unfertilized eggs laid in drone cells become the drones. The eggs of all kinds are hatched within about three days.

Larval stage:

The larval of different types of bees are usually legless. larva in its om cell is fed by

the worker with the appropriate food. The larval stage normally lasts for about one week, during which the larva moults six times and then pupates. Pupal stage:

After about six times of moulting the larva is ready to pupate. Its cell is then capped with wax by the workers. The pupal stage can last for 4 to 5 days, then the wax-capping is broken up and the imago emerges. Adult stage:

The bees of the adult stage are classified into three classes. namely the queen(a fertile female the workers(aterile females), and the drones (sterile males). They are all winged and are capable of flight, but differ in size.

gametophyto

Young

gamefo- phyte

Phizoids

Young Sporophyte Khizoid

Mature

Zygote

gametophyte

AnTheridium

Anthero

Spore

Archegonium

The li cycle of a fem în- cludes two distinct phases or gen erations. The gametophytic phase or generation begins with a spore which gives rise to a very small green plant, the gametophyte. The ametophyte then forms sex organg antheridia and archegonia) which in tum produce, respectively, antherozoids and eggs. The union of an anterozoid and egg forms a zygote which begins the sporophy- tic phase or generation, On ger- mination the zygote develops into a pirasitic, four-lobed embryonic

sponge that undergoes differ

into a primary root, a

1973英文中學會考試題預習專欄

** M * X AME*

地理科(六)

PHYSICAL GEOGRAPHY (5)

MULTIPLE CHOICE REVISION ON

LATITUDE AND LONGITUDE:➡·

1. What is the local time lif Paotow, North China (Long, 110°E). when it is 2.30 p.m. in Marsaille (Long. 6°E)?

A. 7.40 a.m. B. 8.50 p.m.

C. 9.20 p.m.

D. 7.34 avm.

E 9.26 p.E.

2. If a radio broadcast of a foot ball match in the West Indies

(Time Zone 75°W) finished at 8.30

· on the IIth February 1970. what would be the time in Hong Kong (Time Zone 120°E)?

p.m.

A. 5.30 a.m. 12th February. B. 7.30 a.m. 12th February C. 5.30 a.m. 10th February. D. 7.30 a.m. 10th February. E. 6.30 p.m. 12th February. 3. What is the local time in Leningrad (Long. 31°E) when it is. 6 p.m. in Melbourne (Long. 145°E)? A. 6.42 a.m.

B. 8.24 a.m.

10.24 a.m.

D. 10.36 p.n. EL 7.24

4. Which of the following state- nents concerning the Earth are valid?

1. The Earth rotates on its axis from West to East.." II. The Earth's axis is tilted

at an angle of 66 to its orbital plane.

The Earth rotates in an ant -clockwise direction around- the sun.

The Earth approximates to a sphere with a radius of 4000 miles.

The Earth is divided into the Northem and the Sout. hern Hemispheres by the equator.

A. I, II, III and IV only B. II, III, IV and V only "C. I, III, IV and V only D. I, II, III and V only E. 1, 11 I

TV and V only.

5. Which of following state- ments concerning the term

'Equinox' is correct?

The Equinox occurs on the 21st June and 21st December.

3. There are four equinoxes during

the year.

The equinox represents ma mer's day in the Northern Hemisphere.

D. The term 'Equinox' is applied

to the two occasions in the year when the noonday sun is directly overhead at the equator.

The term Equinox' applies to the one occasion during the year when the sun is overhead at the Tropic of Cancer.

Nights are shorter in Hong num In January than they are in Nan- ang, for which of the following easons?.

Nanking is further North and therefore lies far from the equator.

Hong Kong is further East The two cities are in differen time zones

The angle made by the sun at noon is higher in Nanking at this time than it is in Hong Kong.

The earth rotates on its ax19 from East to West.

Which of the following state- ents is correct when the sun is lirectly overhead the Tropic of Cancer at noon on 21st June?

I′ There will be equal day and

night at the Tropic of Cancer:

primary car, and the beginning. of a stem. The formation of the root and loanables the young sporophyte to become independent. The routh of the young sporophyte then altaino a large, green, mat- ure, sporophyto consisting of roota, stem, leaves, and sporophylls. On the unorophylls are borne sporang

a hich contain spore mother cell ach spore mother cell by meiotic division forms four spores, so completing the life-cycle.

It will be the longest day

of the year at the equator. It will be the shortest day

of the year at the Tropic of

Capricom.

IV. This period is known as the

Winter Solstice.

Temperature will be the high

-est in the Southern Hemis phere.

1, 71, III and IV only.

II, IV and V only

I, III, IV and V only

I, III and V only

F. I, III and IV only

8. The latitude of Hankow is 30°N. What will be the angle of the noonday sun on 21st March? A. 600

B. 12001

Ci 900 D. 450.

E 70°

9. If a person in Singapore (Time Zone 105°E) telephones his friend in San Francisco at 11. p.m. on the 2nd March, what time and date would his friend receive his call in San Francisco (Time Zone 120°W A. 5 p.m. on 2nd March. B. 8 a.m. on 3rd March. C. 5 p.m. on 3rd March. D. 11 P. on 2nd March. on 4th March

5. 5 p.m."

10. Given that the angle of the

on the noonday sun at a place on t

21st March and the 21st Septemberi is 360, what will be its latitude? A. 440 North or South of the

equator.

B. 540 North or South of the-

equator.

640 North or South of th equator.

D. 729 North or South of the

equator.

E. 36 North or South of the

equator.

11. What is the greatest altitud (angle above the horizon) of sun at Hong Kong(22°25'N)? A. at an equainox. T B. at the summer solstice. C. at the winter solstice. D. at the two solstices, E. none of the above,

12. What time will it be in San Francisco(112°W) when it is 3 a (standard time) Monday in Hong Kong(114°E)?

A. 8 p.m. Tuesday. B. 9 p.m. Sunday, C. 11 a.m. Sunday. D. 11 a.m. Tuesday, E. 10 a.m. Monday.

13. Which of the following are great circle on the earth?

I. Equator

II. Prime Meridian

III. Central Meridian

IV.

Parallel

V. The circle passing through North Pole and South Pole..

I and II only

I and IV only

II and V only

I and V only

III and IV only

14. What is the time in Tokyo (Time Zone 135°E) when it is

a.m. on 4th December in Munich (Time Zone 15°E)?.

A. 5 a.m. 5th December

p.m. 5th December

p.m. 4th December 1a.m. 4th December p.m. 3rd December

8

15. If someone in Calcutta(Time Zone 90°E) telephones a friend in Vancouver on 4th January at 10 an what time will his friend receive his call in Vancouver Time Zone [120°W)?

A 5 a.m. 3rd January. B. p.m. 3rd January,

10. (8 a am 4th January. D. 10 p.m. 5th January E. 16

3rd January.

Answers:-

5 D 9. B.

13 D.

2. B

10. B. 14. D

B

15 E

Questions for this week:

14 Illustrate the outer features of the body of a typical bony fish. How is the fish adapted to its mode of life in water?

the help of a 2. Describe, with th well labelled diagram, the extemal features of the body of a frog. What mentioned features of frog do you consider as the adaptations for the frog to live both on land and in water?