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Section A[40 marks]

Answer all questions.

1. Diagram 1 shows a part of human digestive system.

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

[3 marks]

(b) What is the function of organ Q?

__________________________________________________________________

[1 mark]

(c) Which of the organ that produces gastric juice?

__________________________________________________________________

[1 mark]

(d) The pancreas produces enzymes. Name these enzymes.

__________________________________________________________________

[1 mark]

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Gall bladder Liver Pancreas

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2. (a) The diagram 2.1 below shows how Jamil’s eye sees a tree.

(i) State one difference between the actual tree and its image on the retina.

_______________________________________________________________

[1 mark]

(ii) If Jamil moves closer to the tree, how does the size of the image change?

_______________________________________________________________

[1 mark]

(iii) State one reason for your answer in 2.a.ii.

_______________________________________________________________

[1 mark]

(b) The diagram 2.2 shows the germinated seeds in three different containers, X, Y

and Z.

(i) Why do the roots in X and Z grow towards the directions shown in the

diagram above?

_______________________________________________________________

[1 mark]

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(ii) Why is the growth of roots in container Y known as negative phototropism?

_______________________________________________________________

[1 mark]

(iii) State the type of tropism shown by the roots.

_______________________________________________________________

[ 1 mark]

3. The diagram 3 below shows a rhinoceros and a giraffe.

Diagram 3

(a) A rhinoceros is more stable than a giraffe. Explain why.

__________________________________________________________________

[1 mark]

(b) Explain why a giraffe spreads its legs wide apart when it drinks water.

__________________________________________________________________

[1 mark]

(c) Diagram below shows objects X and Y which have different sizes and heights.

(i) Which object is more stable?

____________________________________________________________

[1 mark]

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Z

inkZ

w

Diagram __

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(ii) Explain your answer in (c)(i).

____________________________________________________________

[1 mark]

(iii) State two factors that affect the stability of objects X and Y.

____________________________________________________________

____________________________________________________________

[2 marks]

4. Diagram 4.1, a pen being filled with ink.

(a) What can be observed when the piston is pulled upwards?__________________________________________________________________

[1 mark]

(b) When the piston is pulled upwards, which point, W, X, Y or Z has

(i) The lowest air pressure: ________________________________________

(ii) The highest air pressure: ________________________________________

[2 marks]

(c) Give one example of an appliance which works using the same principle as shown in Diagram 4.1.

__________________________________________________________________[1 mark]

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cardboard

water

Diagram 4.2

(a) (b)

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(d) A glass filled with water is covered with a piece of cardboard as shown in Diagram 4.2.a. What can be observed when the glass is inverted as shown in Diagram 4.2.b.__________________________________________________________________

[1 mark]

(e) Explain your observation in 4.d above?

__________________________________________________________________

__________________________________________________________________

[1 marks]

5. Diagram 5 shows processes R, S and T that are involved in the carbon cycle.

Diagram 5

(a) Name processes R, S and T.

R: _______________________________________________________________

S. ________________________________________________________________

T: _______________________________________________________________

[3 marks]

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(b) What gas is used up during process R?__________________________________________________________________

[1 mark]

(c) State two reasons for the importance of plants in the carbon cycle.(i) ____________________________________________________________

____________________________________________________________(ii) ____________________________________________________________

____________________________________________________________[2 marks]

(d) State two differences between respiration and photosynthesis.

Photosynthesis Respiration1. 1.

2. 2.

[2 mark]

6. Diagram 6.1 shows a tool.

Diagram .1

(a) Name the following parts in Diagram 6.1 based on the lever system.(i) P: __________________________________________________________

(ii) Q: _________________________________________________________

(iii) R: _________________________________________________________

[3 marks]

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P

R

Q

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(b) State the class of lever of the tool.__________________________________________________________________

[1 mark]

(c) Tick ( √ ) in the box of the tool that is the same class of lever as the above tool.

[1 mark]

(d) Diagram 6.2 shows two simple levers. Calculate the force needed to balance lever X and lever Y using the following formula:

i) Lever X

ii) Lever Y

[2 marks]

iii) What will happen to the force needed to balance lever X, of the force is moved closer to the fulcrum?

____________________________________________________________

[1 mark]

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Load × Distance of load from the fulcrum = Force × Distance of force from the fulcrum

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Section B[20 marks]

Answer all questions.

7. Diagram 7 shows pictures of animals P, Q, R and S.

(a) Observe the animals in Diagram 7. Based on your observation, state one

characteristics for each animal P, Q, R and S by referring to the backbone.

(i) P: _________________________________________________________

(ii) Q: _________________________________________________________

(iii) R: _________________________________________________________

(iv) S: __________________________________________________________

[4 marks]

(b) Classify animals P, Q, R and S into two groups based on their common characteristics. Write the letters of animals belonging to each group.

[4 marks]

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P, Q, R and S

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8. Diagram 8.1 shows the same student lifting two bags of different masses onto a table.

(a) Based on the observation in Diagram 8.1:(i) Compare the difference in work done between situation L and situation M.

____________________________________________________________[1 mark]

(ii) State one relationship between mass of the bag and the time taken to lift it.____________________________________________________________

[1 mark]

(iii) Write one inference about the bag in situation L.____________________________________________________________

[1 mark]

(b) A student carried out an experiment to investigate Situation A and Situation B. Diagram 8.2 below shows an experiment to determine the types of surface which affect the magnitude of frictional force.

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Diagram 8.2

Based on Diagram 8.2, record the readings of the spring balance in Table 8.3.

Surface Reading of spring balance/N

X

Y

Z

Table 8.3

[3 marks]

(c) Based on reading in Table 8.3, draw a bar chart to show the readings of the spring balance with different surface.

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[2 marks]

(d) State the variables involved in this experiment.

Manipulated variable

Responding variable

Constant variable

[3 marks]

(e) Based on Diagram 8.2, state the operational definition of frictional force.

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__________________________________________________________________

__________________________________________________________________

[1 mark]

~ END OF QUESTION PAPER ~

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