soalan sains tingkatan 2 kertas 2 peperiksaan akhir tahun 2012

7/27/2019 soalan sains tingkatan 2 kertas 2 peperiksaan akhir tahun 2012

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SECTION A (BAHAGIAN A )

[ 40 marks ( 40 markah ) ]

Answer all questions (Jawab semua soalan ).

The time suggested to complete this section is 60 minutes.

(Masa yang dicadangkan untuk menyiapkan bahagian ini ialah 60 minit)

1. Diagram 1 shows the cross section of a human ear.

Rajah 1 menunjukkan keratan rentas telinga manusia.

Diagram 1 (Rajah 1 )

( a ) Label the following parts in Figure 1 Labelkan bahagian-bahagian berikut dalam rajah 1

Cochlea Ossicles Auditory nerve

Koklea Osikel Saraf auditori ( 3 marks )

( b ) Name two structures of the ear that are not involved in the hearing mechanisms.

Namakan dua struktur telinga yang tidak terlibat di dalam mekanisme pendengaran.

i.___________________________________________________________________

ii.___________________________________________________________________( 2 marks )

( c ) What is the function of structure X ?

Apakah fungsi bahagian X ?

____________________________________________________________________( 1 mark )

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2. Diagram 2 shows the human digestive system.

Rajah 2 menunjukkan sistem pencernaan manusia.


( a ) Name the parts labeled W, X, Y and Z.

Namakan bahagian berlabel W, X, Y dan Z.

W : ___________________________ X : ________________________________

Y : ____________________________ Z : ________________________________ ( 4 marks )

( b ) Name the enzyme that is found in part W. Namakan enzim yang terdapat di bahagian W.

____________________________________________________________________ ( 1 mark )

( c ) What liquid is stored in Y?

Apakah cecair yang disimpan di Y?

____________________________________________________________________ ( 1 mark )

( d ) State one function of hydrochloric acid produced in X.

Nyatakan satu fungsi asid hidroklorik yang dihasilkan di X.

_____________________________________________________________________ ( 1 mark )

( e ) State the end products of digestion for the following

Nyatakan hasil akhir pencernaan berikut

i Carborhydrates (Karbohidrat) : __________________________________________

ii Protein (Protein ) : ____________________________________________________( 2 marks )

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3. Diagram 3.1 shows an experiment to study the action of saliva on starch. The result of the

experiment after 30 minutes is shown in the table.

Rajah 3.1 menunjukkan satu eksperimen untuk mengkaji kesan air liur ke atas kanji. Keputusaneksperimen selepas 30 minit ditunjukkan dalam jadual.

Thermometer Termometer

X Y

Test tube ( tabung uji)

Presence of starch (Kehadiran kanji)

X No (Tiada )

Y Yes (Ada )

a. i. Why must test tubes X and Y be kept in the water bath at 37 C ?

Mengapakah tabung uji X dan tabung uji Y direndamkan dalam kukus air bersuhu 37 C?

______________________________________________________________________ ( 1 mark )

ii. State the reason why there is no starch in test tube X ?

Nyatakan sebab mengapa tiada kanji di dalam tabung uji X?

_____________________________________________________________________ ( 2 marks )

iii. In which part of the alimentary canal does the same enzymes action occur as in the test tube X ?

Pada salur alimentary, dimanakah berlaku tindakan seperti yang berlaku dalam tabung uji X?

_____________________________________________________________________ ( 1 mark )

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Starch suspensionAmpaian kanji

+

SalivaAir liur

Water bath 37 CKukus air 37 C

Starch solution

Ampaian kanji

+

Distilled waterAir suling

Wire gauzeKasa dawai

Heated

Dipanaskan


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b. Figure 3.2 shows pictures of several foods.

Rajah 3.2 menunjukkan gambar beberapa makanan.

Based on the pictures, complete the table below by writing the different classes and their food

samples.Berdasarkan gambar tersebut, lengkapkan jadual di bawah dengan menulis kelas makanan yang

berbeza dan contoh makanan.

Food classes

(Kelas makanan )

Food sample

( Contoh makanan )

i . Carbohydrate (Karbohidrat) Bread (Roti )

ii.

iii.

iv.

( 3 marks )

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4. (a).Figure 4.1 shows the situations involving the interaction between living organisms. State the

types of interaction shown for these organisms.

Rajah 4.1 menunjukkan situasi yang melibatkan interaksi di antara di antara organisma hidup.Nyatakan jenis interaksi yang ditunjukkan oleh organisma-organisma ini.

Choose your answer from the following words

Pilih jawapan kamu daripada perkataan-perkataan berikut.

Commensalisme Prey-predator Parasitism Mutualism

Komensalisme Mangsa-pemangsa Parasitisme Mutualisme

Situation

Situasi

Types of interaction

Jenis interaksi

Buran

( 3 marks )

Diagram 4.1

Rajah 4.1

5

Ketam hermit

Tree trunkBatang pokok

Bird nest fernPaku pakis

langsuyar

Rafflesia

Tree

pokok


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( b ) Diagrams 4.2 shows a chart of interaction between living organisms

Rajah 4.2 menunjukkan satu carta organisasi antara organisma hidup.

Interaction

Interaksi

Symbiosis Y Competition

Examples Persaingan

Contoh

Guppy fish and mosquito larvae

Ikan gapi dan larva nya

Diagram 4.2

Rajah 4.2

( i ) What is interaction Y?

Apakah interaksi Y?

____________________________________________________________________( 1 mark )

( ii ) State one advantage of the interaction in 4 ( b ) ( i ) ? Nyatakan satu kebaikan interaksi di 4 ( b ) ( i ) ?

_____________________________________________________________________( 1 mark )

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5. ( a ) Diagram 5.1 shows the classification of plants.

Rajah .15 menunjukkan pengelasan tumbuhan.

PLANTS

Tumbuhan

Flowering plants X

Tumbuhan berbunga

Dicotyledons Y

Dikotiledon

Diagram 5.1 (Rajah 5 )

( i ) What is characteristic used in the above classification to divide all types of plants into two main

groups? Apakah ciri yang digunakan dalam pengelasan di atas untuk membahagikan kesemua jenis

tumbuhan kepada dua kumpulan utama.

_____________________________________________________________ ( 1 mark )

( ii ) Name the groups labelled as

Namakan kumpulan yang berlabel

i X : _________________________________________________________

ii Y : _________________________________________________________ ( 2 marks )

( b ) Diagram 5.2 shows two types of flowering plants.

Rajah 5.2 menunjukkan dua jenis tumbuhan berbunga

( i ) State one characteristic of paddy plant and hibiscus plant.

Nyatakan satu ciri pokok padi dan pokok bunga raya.

Paddy plant : __________________________________________________

Pokok padi

Hibiscus plant : ___________________________________________________ ( 2 marks ) Pokok bunga raya

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Paddy plantPokok padi Hibiscus plantPokok bunga raya


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6. Figure 6 shows a food web

Rajah 6 menunjukkan jaringan makanan.

Diagram 6 (Rajah 6)

( a ) Based on diagram 6, give one example for the following

Berdasarkan rajah 6, beri satu contoh untuk yang berikut

i Producer : ________________________________________________________

Pengeluar

ii Primary consumer : ________________________________________________

Pengguna primer

iii Secondary consumer : ______________________________________________

Pengguna sekunder ( 3 marks )

( b ) How many food chains can be formed from the above food web?

Berapakah rantai makanan yang dapat dibentuk daripada jaringan makanan di atas ?

_________________________________________________________________ ( 1 mark )

( c ) Write down in full two examples of food chains in the above food web

Tuliskan sepenuhnya dua contoh rantai makanan yang terdapat di dalam jaringan makanan di

atas.

i. _______________________________________________________________

ii. _______________________________________________________________ ( 2 marks )

( d ) When the producers and consumers in a food web die, they will be broken down by decomposers.

Give two examples of decomposers.

Apabila pengeluar dan pengguna di dalam sesuatu jaringan makanan mati, mereka akan

diuraikan oleh pengurai. Berikan dua contoh pengurai.

i . ________________________________________________________________

ii . ________________________________________________________________ ( 2 marks )

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Bird/Burung

Paddy plantPokok padi

GrasshopperBelalang Frog

Katak

LizardCicak

Eagles

Helang


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SECTION B (BAHAGIAN B )

[ 20 marks ( 20 markah ) ]

The time suggested to complete this section is 30 minutes

Masa yang dicadangkan untuk melengkapkan bahagian ini ialah 30 minit

7. Figure 7 shows a picture of animals P, Q, R and S.

Rajah 7 menunjukkan gambar-gambar haiwan iaitu P, Q, R dan S.

Diagram 7 (Rajah 7)

Based on your observations in diagram 7

Berdasarkan pemerhatian anda di rajah 7

( a ) State one physical characteristic of each of the four animals, P, Q, R and S.

Nyatakan satu ciri fizikal bagi setiap satu daripada keempat-empat haiwan, P, Q, R dan S.

P : ________________________________ Q : _________________________________

R : ________________________________ S : _________________________________

( 4 marks )

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( b ) Classify animals P, Q, R dan S into two groups based on common characteristics. Name the

animals belonging to each group.

Kelaskan haiwan-haiwan P, Q, R dan S kepada dua kumpulan berdasarkan ciri-ciri sepunya.Namakan haiwan-haiwan di dalam setiap kumpulan.

P, Q, R and S

P, Q, R dan S

Common characteristics i ii

Ciri-ciri sepunya

Names of animals iii iv

Nama haiwan

( 4 marks )

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Conical flask AKelalang kon A

Conical flask BKelalang kon B

Potassium hydroxide pellets

Palet Kalium hidroksida Leaf ADaun A

Leaf BDaun B

8. An experiment is carried out to investigate whether carbon dioxide is required for photosynthesis.

Diagram 8 shows the set-up of the apparatus in the experiment.

Satu eksperimen dijalankan untuk menyiasat sama ada karbon dioksida diperlukan untukfotosintesis. Rajah 8 menunjukkan set radas untuk eksperimen tersebut.


The apparatus were placed in sunlight for 2 or 3 hours. Each leaf was then tested for starch.

Radas diletakkan di bawah cahaya matahari selama 2 atau 3 jam. Setiap daun kemudiannya diuji

untuk kehadiran kanji.

( a ) State the following variables.

Nyatakan pembolehubah berikut.

i. Constant variables:

Pembolehubah dimalarkan

________________________________________________________________ ( 1 mark )

ii. Manipulated variables :

Pembolehubah dimanipulasikan

_________________________________________________________________ ( 1 mark )

iii. Responding variables :

Pembolehubah bergerak balas

_________________________________________________________________ ( 1 mark )

( b ) What is the reagent that can be used to test for the presence of starch

Apakah bahan yang digunakan untuk menguji kehadiran kanji.

________________________________________________________________ ( 1 mark )

( c ) State the function of the potassium hydroxide pellets.

Apakah fungsi kalium hidroksida?

________________________________________________________________ ( 1 mark )

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( d ) Before the experiment, the potted plant is kept in a dark for two days. Explain why this is

necessary.

Sebelum eksperimen, pokok berpasu diletakkan ditempat gelap selama dua hari. Terangkan

kenapa ini perlu.

_________________________________________________________________ ( 2 marks )

( e ) Which of the two leaves, leaf A or B, will show the presence of starch.

Yang manakah, daun A atau B, akan menunjukkan kehadiran kanji.

________________________________________________________________ ( 1 mark )

( f ) Complete the word equation of photosynthesis

Lengkapkan persamaan perkataan untuk fotosintesis

Chloropyll klorofil

+ water glucose +

air sunlight glukos cahaya matahari

( 2 marks )

( g ) What is the conclusion of this experiment?

Apakah kesimpulan eksperimen ini?.

_________________________________________________________________

__________________________________________________________________ ( 2 marks )

KERTAS SOALAN TAMAT

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soalan sains tingkatan 2 kertas 2 peperiksaan akhir tahun 2012

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