science paper 2 mid year 2014

SULIT PEPERIKSAAN PERTENGAHAN TAHUN 2014

SECTION A

1. A student eats several kinds of food and finds that the parts of the tongue X, Y and Z in Diagram 1 are stimulated.

Diagram 1Which of the following are the foods eaten by the student?A. Sweets, chocolate and orangeB. Honey, lemon and common salt

C. Lime, vinegar and common saltD. Sweets, vinegar and orange

2. Diagram 2 shows a longitudinal section of an eye with a defective vision.

Diagram 2Which of the following causes the defective vision?A. The eyeball is too shortB. The eyeball is too long

C. The eye lens is too thinD. The size of the pupil is too small

3. Diagram 3 shows a longitudinal section of a human eye.

Diagram 3What is the function of P?A. Focuses light raysB. Controls the size of the pupil

C. Detects light stimulusD. Allows light to enter the eye

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4. Diagram 4 shows the path of an impulse when the skin receives stimulus.

Diagram 4Which of the following represents P and Q?

P QA. Brain EffectorB. Receptor BrainC. Effector ReceptorD. Receptor Effector

5. Diagram 5 shows two types of eye defects.

Diagram 5What types of eye defects are represented by X and Y?

X YA. Short-sightedness Long-sightednessB. Astigmatism Long-sightednessC. Long-sightedness Short-sightednessD. Short-sightedness Astigmatism

6. Which of the following sensory organs can detect chemical substances?A. Eye and noseB. Tongue and skin

C. Nose and tongueD. Nose and ear

7. The information below describes a type of response of a plant due to a stimulus.

Which of the following is the response?A. PhototropismB. Geotropism

C. ThigmotropismD. Hydrotropism

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Shoots grow towards the stimulus Enable the plant to obtain sunlight Roots grow away from the stimulus


8. Diagram 8 shows the structure of the human skin.

Diagram 9Which of the parts labelled A, B, C or D is the pressure receptor?

9. Which of the following shows the correct refraction of a light ray when light travels from air to water?A. C.

B. D.

10. Vitamin X has the following characteristics:

Based on the information given, what is vitamin X?A. Vitamin AB. Vitamin B

C. Vitamin CD. Vitamin D

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Prevents scurvy Promotes healthy skin Found in lime


11. Diagram 11 shows samples of foods.

Diagram 11Which group of food has high content of carbohydrate?A. Milk, tomato, fishB. Rice, bread, noodle

C. Egg, bread, fishD. Fish, egg, rice

12. Diagram 12 shows an experiment carried out to study the absorption of substances through a Visking tube.

Diagram 12The distilled water is tested at the end of the experiment. Which of the following is the result of this experiment?

Test for starch Test for glucoseA. Present AbsentB. Absent PresentC. Absent AbsentD. Present Present

13. Table 13 shows three types of food and their calorific values in 100 g of the food mentioned.Type of Food Calorific Value / kJ

Rice 1500Chicken egg 700

Banana 350Table 13

A student had his breakfast by taking the food shown below.

A. 1275 kJ B. 2375 kJ

C. 2550 kJD. 3875 kJ

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200 g rice 100 g chicken egg 50 g banana


14. Diagram 14 shows a man who is suffering from a disease.

Diagram 14Which of the following nutrient is lacking in his diet?A. Iodine B. Vitamin

C. CalciumD. Protein

15. Table 15 shows the observations for tests carried out on a food sample.

Food Test ObservationBenedict’s solution is added to the food sample and heated

Brick red precipitate is formed

A few drops of iodine solution is dripped onto the food sample

A dark blue colour is formed

Table 15The food sample containsA. fat and starchB. protein and starch

C. protein and fatD. glucose and starch

16. A boy had his lunch and dinner by taking the following food.

The diet of the boy is lacking inA. fibre proteinB. fat

C. protein D. carbohydrate

17. Diagram 17 shows two animals of different classes.

Diagram 17What are the similarities of these animals?A. Lay eggs and are cold-bloodedB. Have scales and ear lobes

C. Lay eggs and are warm-bloodedD. Have dry scales and are warm-blooded

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Lunch Nasi lemak Bread with butter A glass of water

Dinner Fried Kuey Teow Fruit salad A cup of coffee


18. Which of the following groups of vertebrates are warm-blooded?A. Fish onlyB. Fish and amphibians

C. Mammals and reptilesD. Birds and mammals

19. A vertebrate has the following characteristics.

Which of the following animals has the characteristics shown above?A. SnakeB. Duck

C. Panther D. Platypus

20. The following information shows the characteristics of a plant.

Which of the following plants have these characteristics?A. Maize plant and grassB. Oil palm and rubber tree

C. Grass and balsam plantD. Durian tree and hibiscus plant

21. Diagram 21 shows parts of the classification of vertebrates.

Diagram 21Which statement is correct?A. X gives birth to youngB. Y is cold-blooded

C. X is covered with dry scalesD. Y breathes through gills

22. Which of the following is true about X?

A. Warm-bloodedB. Has moist skin

C. Has scaly skinD. Gives birth to young

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Possesses dry scales Cold-blooded Lays eggs

Hard stem Tap root system Leaves with network veins


23. The graph in Diagram 23 shows the number of organisms K, L, M and N.

Diagram 23Which of the following pyramid of numbers represents the relationship among the organisms?A. C.

B. D.

24. Diagram 24 shows a pyramid number in a field.

Diagram 24Which of the following shows the effect on the field if all the frogs are caught?

Snake Grasshopper LeavesA. Decreases Increases DecreasesB. Increases Decreases IncreasesC. Decreases Increases IncreasesD. Decreases Decreases Decreases

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25. Snakes in oil palm estates are able toA. control diseases of oil palm treesB. prevent the stealing of palm fruits

C. control pests biologicallyD. increase organic fertiliser

26. Diagram 26 shows an energy flow.

Diagram 26Which of the following organisms are represented by K, L, M and N?

K L M NA. Paddy Grasshopper Frog SnakeB. Grass Frog Rat EagleC. Snake Paddy Grasshopper RatD. Eagle Snake Frog Grasshopper

27. Diagram 27 shows the condition of a balsam plant.

Diagram 27The balsam plant wilts after three days because of insufficientA. lightB. carbon dioxide

C. waterD. chlorophyll

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28. Which of the following statements explains why the activities of logging should be stopped?A. Causes acid rainB. Pollutes the coastal areas

C. Increases the haze content in airD. Decreases the oxygen content in air

29. Diagram 29 shows a process K which occurs in a green leaf during the day.

Diagram 29Which of the following are represented by K, L and M?

K L MA. Photosynthesis Carbon dioxide OxygenB. Respiration Carbon dioxide OxygenC. Photosynthesis Oxygen Carbon dioxideD. Respiration Nitrogen Carbon dioxide

30. Which of the following human activities causes the depletion of the ozone layer?A. ForestryB. Burning of fossil fuels

C. The use of chlorofluorocarbonsD. The use of hydro chlorofluorocarbons

High Order Thinking Skills (HOTS) Questions [From TIMSS]

31. What is the BEST reason for including fruits and leafy vegetables in a healthy diet? (TIMSS 1995)A. They have high water content.B. They are the best source of protein.

C. They are rich in minerals and vitamins.D. They are the best source of carbohydrates.

32. What is the main function of chloroplasts in a plant cell? (TIMSS 1995)A. To absorb light energy and manufacture

food B. To remove waste materials by active

transport

C. To manufacture chemical energy from food

D. To control the shape of the cell

33. On cold days, snakes usually lie very still and eat little or nothing, while birds usually move around and eat a lot of food. Which statement best explains this? (TIMSS 1995)A. Both animals are cold-blooded, but without feathers to keep warm, snakes get too cold to move. B. Unlike birds, snakes are warm-blooded; they must hibernate during cold weather. C. Unlike snakes, birds are cold-blooded; they are less affected by the cold than snakes. D. Unlike snakes, birds are warm-blooded; they must eat food to maintain a constant temperature.

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34. Which of the following organs is NOT situated in the abdomen? (TIMSS 2003)A. LiverB. Kidney

C. StomachD. Heart

35. In living things, large and complex molecules are broken down into small and simple molecules. What is the process called? (TIMSS 2007)A. Excretion B. Absorption

C. Digestion D. Circulation

36. An animal has scales and uses only its lungs to exchange gases. What is the animal most likely to be classified as? (TIMSS 2007)A. A fish B. A reptile

C. A mammal D. An amphibian

37. When sound waves with large amplitude are composed to sound waves with small amplitude, which of the following is true? (TIMSS 2007)A. Sound waves with large amplitudes have less energy and sound quieter B. Sound waves with large amplitudes have more energy and sound louder C. Sound waves with large amplitudes have the same energy and sound quieter D. Sound waves with large amplitudes have the same energy and sound louder

38. The gall bladder stores bile, a fluid that aids in digestion of fat. Which of the following types of food should be avoided by a person whose gall bladder has been removed? (TIMSS 2007) A. Fruits B. Grains

C. Cheese D. Vegetables

39. The crews of two boats at sea can communicate with each other by shouting. (TIMSS 1995)Why is it impossible for the crews of two spaceships a similar distance apart in space to do this? A. The sound is reflected more in space.B. The pressure is too high inside the spaceships.C. The spaceships are traveling faster than sound.D. There is no air in space for the sound to travel through

40. Which of these meals would give you most of the nutrients that you need? (TIMSS 1995)A. Meat, milk, and a piece of chocolate B. Bread, vegetables, and fish

C. Vegetables, fruits, and water D. Meat, fish, and bread

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10

Total


SECTION B

1. Diagram 1 shows the structure of a human ear.

Diagram 1(a) On Diagram 1, label P, Q and R using the following words:

[3 marks]

(b) (i) Name structure X in Diagram 1.

__________________________________________________________________________ [1 mark]

(ii) State the function of X.

_________________________________________________________________________ [1 mark]

(c) Tick (√) in the box for structure that are not involved in the hearing mechanism.

Auditory nerve Eustachian tube

Oval window Semicircular canals

[2 marks](d) Name the types of tropisms shown below.

Shoot: ____________________________

Shoot: ____________________________

Root: ____________________________[3 marks]

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Cochlea Semicircular canals Ossicles

R:

P: Q:


2. Diagram 2 shows the human digestive system.(a) (i) Label the following structures in Diagram 2.1. [3

marks]

Diagram 2.1Diagram 2.1

(b) Y contains hydrochloric acid. Name structure Y in Diagram 2.1. [1 mark]

(c) A food test was carried out on a food sample. The table below shows the results of the test.Food Test Observation Food Class

A few drops of iodine solution is added Dark blue colour formed

Food sample is heated with a few drops of Millon’s reagent

Dark red precipitate formed

(i) Complete the table above by stating the classes of food that are present in the food sample.[2 marks]

(ii) Explain what happens to the food sample while it is in structure X.

___________________________________________________________________ [1 mark]

(iii) What happens to the final products of food digestion in Z?

___________________________________________________________________ [1 mark]

(d) Experiment to study the absorption of digested food is shown in the Diagram 2.2. What is represented by the(i) Visking tube? ______________________ d Diagram 2.2

(ii) Distilled water? ______________________[2 marks]

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Y:

Z

X:

Oesophagus Pancreas Large intestine

10

Total


3. Diagram 3 shows the apparatus set-up for an experiment to determine the absorption of glucose.

(a) State the variables in the experiment. [3 marks]

Fixed variable

Manipulated variable

Responding variable

(b) The result of the experiment is shown in Table 3.2.

Test Observation

P Q R S

Iodine test Yellow Blue-black Blue-black Yellow

Benedict’s test Brick-red precipitate Brick-red precipitate Pale blue Pale blue

Based on the result in Table 3.2, (i) Mark (√) in the boxes to show the contents in test tubes P, Q, R and S. [4

marks]Content Starch Glucose

P

Q

R

S

(ii) State one inference that can be made from 3 (b) (i).

_____________________________________________________________________________

______________________________________________________________________ [2 marks]

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10

Total

V, W, X, Y and Z

Common characteristics

Names of animals


(iii) Name one organ in the human digestive system that has similar characteristics to the Visking tube.

______________________________________________________________________ [1 mark]

4. Diagram 4 shows animals V, W, X, Y and Z.

Diagram 4(a) State one characteristic each of animals V, W, X, Y and Z based on the types of blood.

V: ___________________________

W: ___________________________

X: ___________________________

Y: ___________________________

Z: ___________________________

[5 marks]

(b) Classify animals V, W, X, Y and Z into two groups based on their common characteristics. Name the animals belonging to each group.

[4 marks]

(c) State the types of vertebrates which breathe through moist skin.

_____________________________________________________________________________ [1 mark]

15

V:

W:

X:

Y:

Z

10

Total


5. Diagram 5 shows the carbon and oxygen cycles.

Diagram 5(a) Complete the carbon and oxygen cycles in Diagram 5 with the following information. [5 marks]

(b) State two functions of photosynthesis in the carbon cycle.

(i) _____________________________________________________________________________

(ii) _____________________________________________________________________________[2 marks]

(c) State three human activities that bring about an imbalance to the carbon and oxygen cycles.

(i) _____________________________________________________________________________

(ii) _____________________________________________________________________________

(iii) _____________________________________________________________________________[3 marks]

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Decomposition Carbon dioxide Oxygen Respiration Combustion

10

Total


High Order Thinking Skill (HOTS) Question

6. In rural area, there are many trees. The people living in the area decide to cut down the trees for wood.

Give five possible long-term effect of their decision on the environment.

(a) ____________________________________________________________________________________

____________________________________________________________________________________

(b) ____________________________________________________________________________________

____________________________________________________________________________________

(c) ____________________________________________________________________________________

____________________________________________________________________________________

(d) ____________________________________________________________________________________

____________________________________________________________________________________

(e) ____________________________________________________________________________________

____________________________________________________________________________________

[10 marks]

17

10

Total


END OF QUESTION PAPER

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science paper 2 mid year 2014

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