A complete BIOLOGY SPM exam focus ,marking scheme included. Made BIOLOGY learning easierFull description
Properties of mineral, Reaction of metals with oxygen and sulphur, reactions of calcium carbonate
Summary of Form 4 Mathematics Chapter 3
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Chemistry Form 4 Chapter 3Full description
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Exercise form 1 chapter 2Full description
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Form 3 Science Chapter 2
FORM 3 CHAPTER 2 TRANSPORT SYSTEM
1. Diagram 1 shows two types of blood vessels, P and Q.
R
P: ……………………….
Q: ………………………. Diagram 1
(a) Name blood vessels P and Q on Diagram 1. [2 marks]
(c) Name the blood vessel that connects blood vessel P and Q? ……………………………………………………………………………………………………… [1 mark]
(d) Explain why there is a difference in the thickness of the wall in blood vessels P and Q. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… [1 mark]
(e) What is the function of R? ………………………………………………………………………………………………………
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Form 3 Science Chapter 2
[1 mark]
2. Diagram 2.1 shows the transverse section of the stem of a balsam plant.
P Q
Diagram 2.1
(a) Based on Diagram 2.1, label structure P and Q and state their functions. Structur e P
Name
Function
Q [4 marks] (b) The outer part of the stem of a plant is removed as shown in Diagram 2.2.
Diagram 2.2 (i)
What can be observed about the condition of the plant after 8 weeks? Draw your observation in the box provided. [1 mark]
(ii)
Explain your observation in (b)(i). …………………………………………………………………………………………………..
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Form 3 Science Chapter 2
………………………………………………………………………………………………….. [1 mark] 3. Diagram 3 illustrates the circulation of blood in the human body.
Lungs
Q
P
Body Diagram 3
(a) Label the following on Diagram 3. Aorta
Right ventricle
Pulmonary artery [3 marks]
(b) Mark using arrow,
, to show the flow of oxygenated blood in the circulatory system. [1 mark]
(c) The systemic circulation is the circulation of blood from the heart to the body cells and back to the heart again. Label the systemic circulation on Diagram 3. [1 mark] (d) State one difference between blood vessel P and blood vessel Q. ………………………………………………………………………………………………………….. …………………………………………………………………………………………………………..
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Form 3 Science Chapter 2
[1 mark]
4. (a) A pupil observed that the condition of a plant is different in the morning compared to the afternoon. 11 12
11 12 1
10
2
9
3
8
7
6
5
1
10
2
9 8
4
Morning
3 7
6
5
4
Afternoon Diagram 4.1
(i)
Based on the observations in Diagram 4.1, state the difference in the condition of the plant. ………………………………………………………………………………………………… ………………………………………………………………………………………………… [1 mark]
(b) The pupil then carries out an experiment to investigate the situation in Diagram 4.1. Diagram 4.2 shows the arrangement of apparatus for the experiment.
Thermometer
Thermometer
Heat source
30 oC
40 oC
Cotton wool
Cotton wool
Layer of oil
Layer of oil
Water
Water
Electronic balance
Electronic balance
Plant X
Plant Y Diagram 4.2
The pupil takes the following steps: S1 S2 S3 S4 S5 S6
Two similar green plants X and Y are set up as shown in Figure 4.2. Initial mass of X and Y are taken. Plant X is left at room temperature that is 30 oC Plant Y is put under a heat source that is 40 oC The final mass of X and Y are taken after 2 hours. The results are tabulated in table 4.3
Results: Plants X Y
Initial mass 280.60 g 280.60 g Table 4.3
(i)
Using the formula, Rate of transpiration = Mass lost (g) Time (hour)
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Final mass 280.00 g 278.80 g
Form 3 Science Chapter 2
calculate the rate of transpiration for plant X and Y and complete Table 4.4. Plant P
Rate of transpiration (g/hour)
Q Table 4.4 [2 marks]
Rate of transpiration (g/hour)
(ii) Using Table 4.4, draw a bar chart to show the rate of transpiration in plant P and plant Q.
0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1
[2 marks] Plant (iii) Based on the bar chart in (b)(ii), what can be said about the rate of transpiration in the plants? ………………………………………………………………………………………………………
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Form 3 Science Chapter 2
……………………………………………………………………………………………………… [1 mark]
(c) State the variables involved in this experiment. Manipulated variable Responding variable Constant variable [3 marks] (d) Based on the experiment, state the relationship between temperature and the rate of transpiration. ……………………………………………………………………………………………………… ……………………………………………………………………………………………………… [1 mark]
149
Form 3 Science Chapter 2
5. Diagram 5 shows the components of blood.
P
Q
R
Diagram 5.1
(a) Using the following words, label P, Q and R on Diagram 5.1. Red blood cell
White blood cell
Platelet [3 marks]
(b) State the function P. ………………………………………………………………………………………………………… [1 mark] (c) Name the component of blood which contains haemoglobin. ……………………………………………………………………………………………………….. [1 mark] (d) What is the importance of R? ………………………………………………………………………………………………………. [1 mark]
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Form 3 Science Chapter 2
(e) Diagram 5.2 shows three bags of blood from three different donors. A
B
AB
Diagram 5.2
(i)
If a patient with blood group B needs a blood transfusion, which bag of blood will be compatible? Mark (√ ) in the box provided in Diagram 5.2. [1 mark]
(ii)
Explain what will happen if incompatible blood group is used for the transfusion. …………………………………………………………………………………………………. …………………………………………………………………………………………………. [1 mark]
