era pelangi form 2 science

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  • 7/27/2019 Era Pelangi Form 2 Science

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    SULIT 55/2

    PEPERIKSAAN PERTENGAHAN TAHUN SCIENCE FORM 2

    PAPER 2

    1 HOUR 30 MINUTES

    [100 Marks]

    JANGAN BUKA KERTAS SOALAN INI SEHINGGA DIBERITAHU

    Section Question Full mark Obtained

    mark

    A

    1 10

    2 10

    3 10

    4 10

    5 10

    6 10

    7 10

    8 10

    B9 8

    10 12

    GRAND TOTAL 100

    1. Tulis nama dan kelas anda padaruang yang disediakan.

    2.

    Kertas soalan ini adalah dalamdwibahasa.

    3. Soalan dalam bahasa Inggerismendahului soalan yang sepadandalam bahasa Melayu.

    4. Calon dibenarkan menjawabkeseluruhan atau sebahagian soalan

    sama ada dalam bahasa Inggerisatau bahasa Melayu.

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    Section A[80 marks]

    Answer all questions.

    1. Diagram 1 shows the structures of the human skin.

    Diagram 1(a) On Diagram 1, label the structures P, R and S. [3 marks]

    (b) State one function of the skin.

    ___________________________________________________________ [1 mark]

    (c) What are the two factors that influence the sensitivity of the skin?

    ___________________________________________________________ [1 mark]

    Diagram 2.1 Diagram 2.2

    ______________________ ______________________

    (d) In the spaces provided, name the type of visions.[1 mark]

    (e) State the advantage of the vision in Diagram 2.1.

    ___________________________________________________________ [1 mark]

    (f) State two characteristics of the vision in Diagram 2.2.

    ___________________________________________________________ [1 mark]

    (g) List two examples of animals with the vision of Diagram 2.1

    ___________________________________________________________ [2 marks]

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    2. Diagram 3 shows a human digestive system.

    Diagram 3(a) Name all of the parts labelled P, Q, R, S, T, U and V. [2 marks]

    (b) What is produced by part V? State its pH value.

    ___________________________________________________________ [1 mark]

    (c) Write the word equation of the reaction that takes place in part V.

    ___________________________________________________________ [1 mark]

    (d) Where does the digestion of food ends?

    ___________________________________________________________ [1 mark]

    (e) Explain the digestion of protein in part P.

    ___________________________________________________________ [1 mark]

    (f) State the function of parts labelled;

    R: _________________________________________________________

    S: _________________________________________________________ [1 mark]

    (g) Explain the digestion of protein in part P.

    ___________________________________________________________ [1 mark]

    (h) What is balanced diet?

    ___________________________________________________________ [1 mark]

    (g) List two factors that influences balanced diet.

    ___________________________________________________________ [1 mark]

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    3. Figure 2 shows cross-section of a human ear.

    c) State the function of;(i) Oval window: ________________________________________

    (ii) Ossicles: ____________________________________________ [1 mark]

    d) Figure below shows a cross section of human tongue.

    (a) State two characteristics of the organ above.

    ____________________________________________________ [1 mark]

    (b) Areas labelled as E, G, H and I are sensitive towards? [4marks]

    (i) Vinegar :___(ii) Pomegranate:___(iii) Salty egg:___(iv) Coffee: ____

    (c) Name the spotty structure located on the surface of the tongue.

    ____________________________________________________ [1 mark]

    E

    I

    G

    H

    Figure 2

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    3. Figure 1 shows the classification of plants.

    (a) Complete Figure 4 by identifying the parts labelled as,

    (i) L : ____________________________(ii) M : _________________________[1mark]

    (b) Based on your answer in (a), state one example of plant for each of the following.

    (i) L : ____________________________(ii) M : _________________________[1mark]

    (c) Apart from flowering plants, there is also a classification of non-flowering plants.State two characteristics of non flowering plants.

    _____________________________________________________________ [1 mark]

    (d) Figure below shows the characteristics between amphibians, fish and reptiles.

    (a) What is the habitat for

    (i) fish : ___________ (ii) amphibians :__________ (iii) reptiles :____________[1mark]

    (b) Identify one common characteristics of Q.

    ______________________________________________________________ [1mark]

    (c) State one example of animal for each of the following.

    (i) fish : ___________ (ii) amphibians :__________ (iii) reptiles :____________[1mark]

    (d) Where is the habitat of camel, scorpion and cactus?

    ______________________________________________________________[1mark]

    (e) Platypus is classified as a? Why?

    _____________________________________________________________[2marks]

    FISH

    AMPHIBIAN REPTILESQ

    Plant

    Flowering plant

    L M

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    5. Diagram 2 shows the classification of vertebrates.

    (a) What groups do M and N represent? Label M and N. [1 mark]

    (b) What is the term cold-blooded mean ?

    ___________________________________________________________ (c) What is the term warm-blooded mean ?

    ___________________________________________________________ [1mark]

    (d) Which group of vertebrates has feathers?

    ___________________________________________________________ [1mark]

    (e) Which group of vertebrate moves using limbs and tails?

    ___________________________________________________________ [1mark]

    (f) What gland is used by mammals to feed milk to their youngs?

    ___________________________________________________________ [1mark]

    (g) Regarding chapter 2, complete diagram 5 that shows classes of food.

    [5 marks]

    VERTEBRATES

    BIRDS REPTILES FISH

    M: N:

    Diagram 4

    Classes of Food

    Fats

    Vitamins

    Diagram 5

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    SULIT 55/2

    6. Diagram 5.1 shows how human eye can see .

    (a) (i) State one difference between object Q and image I .

    ___________________________________________________________ [1mark]

    (ii) How does the size of the image I change when the eye is 10 cm from object Q ?

    ___________________________________________________________ [1mark]

    (iii) State one reason for the answer in 1(a)(ii).

    ___________________________________________________________ [1mark]

    (b) (i) Complete Diagram 5.2 to show the formation of an image of a distant object onthe retina of the eye of a short sighted person.

    (ii) What causes the situation in Diagram 5.2 to happen?

    _________________________________________________________ [1mark]

    (iii) How can the situation in Diagram 5.2 be corrected? _________________________________________________________ [1mark]

    (c) Label parts P, Q, R and S.

    Q

    (i) State two characteristics of sclera.

    _________________________________________________________[2marks]

    PR

    SQ

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    7.(a) The diagram below shows the cross section of a human ear. Label the t partsusing the word given in the box. [8 marks]

    7.(b) Give the function for the followings. [2 marks]

    Pinna Ear canal Eardrum Ossicles

    Oval windows Semicircular canal Cochlea Eustachian tube

    Eardrum

    Pinna

    Cochlea

    Auditory nerve

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    8.(a) The diagram shows the human eye. Label the structures.

    [5 Marks]8.(b) Show the correct match between the structures and functions. [2 Marks]

    8.(c) Label the parts of the human digestive system in the following words. [3 marks]

    PART FUNCTION

    i. Controls amount of li ht enterin the e e

    ii. Hel s to focus the li ht on the retina

    iii. Focuses the li ht to form an ima e on the retina

    iv. Controls the size of the u il

    v. Receives light stimuli and changes it to nerve impulses

    E

    B

    F

    I

    H

    G

    D

    C

    A

    Liver, Ileum, Gall bladder, Pancreas, Large intestine, Oesophagus, Stomach, Mouth, Salivary glands

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    SULIT 55/2

    Section B[20 marks]

    Answer all questions

    9. Diagram below shows four different types of plant P, Q, R and S.

    (a) Based on your observation in Diagram 4, state one characteristic of each plant.

    P:

    Q:

    R: ...

    S: [4 marks]

    (b) Classify the plants into two groups based on their common characteristics.

    [4 marks]

    P Q R S

    Diagram 4

    Commoncharacteristics

    P, Q, R, S

    Names of plants

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    10. Diagram shows the apparatus set up in an experiment to show the absorption of glucose and starch through a visking tube.

    Diagram

    (a) State the variables involved in this experiment in table below.Manipulated variable

    Responding variable

    Constant variable

    [2 marks]

    (b) Arrange the following steps to show the correct order of this experiment.Activity Step

    (i) Leave aside for one hour.

    (ii) Tie one end of the visking tube tightly.(iii) Rinse the Visking tube with distilled water.

    (iv) Tie the open end of the Visking tube.

    (v) Fill the tube with starch solution and amylase.

    (vi) Test the distilled water for presence of starch and glucose

    at the beginning of experiment.

    (vii) Place the Visking tube into the beaker that is filled with

    distilled water.

    (viii) Test the distilled water for presence of starch and glucose

    at the end of experiment.

    [2 marks](c) What is the aim of this experiment?

    __________________________________________________________ [1mark]

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    (d) Complete the table below based on the experiment.

    Boiling tube A( Test for Starch )B

    (Test for glucose)

    Beginning of experiment Absent Absent

    After 20 minutes

    [1 mark]

    (e) What can be inferred from the results in above.

    __________________________________________________________ [1 mark]

    (f) Name the reagent used to test for the presence of;(i) starch:

    __________________________________________________________

    (ii) glucose: __________________________________________________________ [1 mark]

    (g) Which part of the alimentary canal is represented by the:(i) Visking tube:

    __________________________________________________________

    (ii) Distilled water: __________________________________________________________ [1 mark]

    (h) Name the process by which the glucose molecules move from Visking tube intowater in the boiling tube.

    __________________________________________________________[1 mark]

    (i) Explain one reason why the model of the experiment is a poor representation of the part of the gut responsible for absorption of food.

    _________________________________________________________

    _________________________________________________________[2 marks]

    END OF QUESTION PAPER