K A B. BABE AC=CB=AD: BE (6)ABC為一角形一直線與BC之涵更線
CA, AB 分别支於PQR; CX 平行於PQ
XR
question 1 Answer,
(a) The green plant (B) is a producer,
being able to synthesize organio food from inorganic chemicals (CO
and water) through the procese of photosynthesis.
The small inssot (A) is feeding the green plant directly. Being
herbivore it is a primary cona Ta
The large insect (D) relies its
to the soil through the putze-
fying action of the bacteria, Whose saltu dan be used to maintain the If ther Breen-THE plante in turn keep the primary consumers and secondary consumers alive. If the world wore depleted. of bacteria, the soil will become iwss and less fortile until all the green plante die away. ¿Y a result
sooner or later.
Question 2 Answeï ·
(a)
blood
Artery
LUNGS
MAY 1972
育教僑華
HALL 頁一第張五第一日三十月四年子壬宴 WAH KIUYAT PO
報日僑華
四期星
日五廿月五年二七九一曆公年一十六國民華中
1972
英中會考生物科答案
中文中學會考試題預習專欄 數學科(三十)・張正邦·
過個PDE上一點C之切線平行於 弦DE,又與两弦PP及PE之進像相
堅道英文書院,
BIOLOGY (30).
普通數學預習題
試卷二(两小時完卷)
本春分甲乙两部甲部+题全答佔 四十分乙部選答四題每題十五分 全卷共容十四題
=
#ortis
器?
AR RB
甲部
已知nx号,試求decx
escx 21
EA.
bicuspid valv
Faorta
不用表試 Cool5°之值
(五分
(三)已知5mA=言
求CO(A+B)之值
一半輪每秒轉口次,問轉4半 狉角須時間幾何?”
secondarger
(3)一等腰三角形之低為20,面積與
求各角
(六)图中設CPQR-矩形AQB為一直 線,又設CP=X吋.CR÷4吋CA
a吋CB=b吋求一联繫力.y a..之方程式.
(3分)
(七)由圆外一點X作一直線XAB,與
园相交於A.BXT為自X五国之切線 豉AB=12吋AX=4吋,求XT之長
(四分) 答
X與0相距 Tom. AXB為国内之 弦,AX=2XB. 求AB之長
ABCD為因内援四菱形0萬国心 Bke LAOC = 140° *LADE. (@b
三阴彤BC中,AB=36吋BC=25吋 LCBBC=30. 求酒形面積(四分
答
一尺高之崖頂測得在海上與產花 成一直線之两船之俯再各為日及中、 試表明比两船距離為人(Gt中-
R.
Ba ABC為内接於一周之三角形過C
點之切線與過B點平行於AC直 線相交於D認証 CD2: AB2=DB: CA 兩個相於AB:X為AB延長線上一 點:以人為圓心之国交首周於PQ 交次国於LM,RXM或其他長 與PQALMA相更於ST試証
PS = T M...
(卞)(a) 正三角形ABC的是AB. AC上各 FRED $6 12 BEAD. * BD. CE
的交點P的軌跡
圖中C為那上一點 Ac=7.cm. ck 3cm 二周因心為Q與脂相切 於C,且與AB為直径,0為因心之周相 切求此国之半径
解
普通數學預習題解答
Eko tanx = & sect. CAC大之值
緃檸 橫標
由是一終边以帮點與(Q)决定之
B2 secx=
CACX
K secx=
時
b
((二)不用表試求Co5°之值(3分)
解 Col5°= Co (60°-45)
Gn60° Gn45" + Sim60°Sim4 吉+ 啦
E(+巨)
答
√2+√7
色知 SmA=言,如B=- 求Co(A+B)之值. 解
SIA.
An B = tlin (A+B).
Cins (45+30)
=45°
B=30°
food supply on primary consumers Such] as small insects and caterpillars
so it ie a secondary consumer or carnivore.
The bird (2) is regarded as both primary and secondary consumers
because it can table up green plant à
as well an animala se, insects and
earthworms as food. It is an omnivore,
The hawk '(H) being a carnivore
which catches the bird and the rab-
bit for its goal is a secondary -consumer.
increas
in aizd
incisaão
aumere in nuibo8
smaller
consumer
primary
consumers
producere
Food. pyramid
com the food pyramid we understand that those organisme nearer the base are present in higher number than those near the tip. Therefore in the food web pro- vided, the green plant is the producer and is serving as the main food source for many animale so it must be fluorish ing in order to maintain the lives of these animala as well as itself." The dadll insects, and the caterpillar are Berving as food for many layer animalu
too such as the birde and the large insecte, so they too must maintain a. high facundity to keep the population high enough to avoid extinction. (11) The hawk is supposed to be least
numerous because its a Barvival
depends mainly on the availability. Lof the food source present such as
the number of rabbita and birds.
(c) The green plant can carry out phobog-
ynthesia, i.e. it exhibits holophy- tio mode or nutrition, while the othere are holosoio animals which cúnsume organic food obtained from the environment,
The earthworm are making burrows while moving through the soil. The wora casts or fasons of the worm are laid on the surface of the soil during night-time,
The burrowing action helps to loosen the soil for better aeration and
The easter penetration of roote. earthworm enriches the soil by bring-
ing the minurut saltà, as well as the] Kumum-ZrOn the lover, soil. Envels to: the surface through the deposition
The special grey colouration) of the, fur, provides commouflage to escape the attention of the bank,se
The large long ears can detebt the slightest sound from the flying. back near by so that it can hide
way soon before the enemy arrives. The long hind, limba enable tha rabbit to run away quickly at the s approach of the hawka” The olave, ots The diabe help the rabbit to dig out holes in the soil to hide away froR
(f) Baoteria are amaproOORT, COPROIBLAY
abundant in the soil. They are the chief agenoy causing the decay of
organisms in the food web after the latters death. Thus the dead bodies can be removed. Trom the earth giving place to other organions, to come. The minorul salta, too from the dead, organisma bàn be returned
Kidney blood Capillazion
right
auricle)
direction of movement f
Diagram to show the path of the
corpuscles from the heart to the Kidneyø. and back to the heact.
(8)
The neart Te exhibiting pumping action through the activity of the heart muacle (cardiac muaole) which helps to draw the blood from the venous ayatem back to the heart and force the blood out to various parts of the body. As the auricles contract the blood is pused down, to the ventricles, The.
·blood from the left auricle goes the left ventricle through, the hols
governed by the bicuspid valve, while that from the right auricle runs into the right ventricle through the open-
Best E ing tricuspid valves. These valves ( prevent the backflow of blood. Cone traction of the think muscllar vent- ricular walls which follows, pumpe the blood away from the heart.. The blood from the left ventricle is drainsd through the aortic arch and doraal aorta to all parts of the body, while the: blood from the right ventricle is forced into the pulmonary arteries) leading to the lungs,
The action of the heart keeps the blood in circulation around the body: such that the chemicala from different parts of the body can be transported
to their respective destinations, such se the food from the gut to the tingue cells and waste products from these cell to the excretory organe. etc. (c) There' are three main foroen reapon ble for the upward transport, of through the xylen vessels of hig green plantes
(1) Capillary BoTION --DUCAUST VIS
rylam vessels are very narrow. (2) root pressure-due to the water
"absorption bhy the roote
(3) leaf auction or transpiration
pull-resulting from the evapora- tion of water from abó
心若S表△BCż面積試正
"Q SMB SMC COCA.
Ea, SABC & GE a (GSB-Sub)
+b (CDA + 5mA)
設 CoA=等. A<90°求
4 Cat A+ SARCA 255
()(Q) 370 Q-872.5 b=632.7****
"C= 80" at t=1915.
(b)設ABC三角成等差級數:
* Cot B = Lim A-Sie c
CoC - COA
吉
答
(四)-車輪每秒轉12次.問轉4半
後再須時間幾何?
醌∵每秒轉2次,即每秒轉12×25 半
移角、由比例(設工秒表所須時間)
= 12×21 mx 4
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淨(三選部一起)
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