P5 Circulatory and Air Respiratory System

Which of the organs is matched wrongly to its functions?

• (1)

• (2)

• (3)

• (4)

The diagram shows Steven running from a stationary position. Which of the statements are true?

• (1) A and B only

• (2) A, C and D only

• (3) B, C and D only

• (4) A, B, C and D

The diagram shows how blood is transported in some parts of the body. Which one is true?

• P: Low in oxygen

  Q: Low in carbon dioxide

• P: Low in oxygen

  Q: High in carbon dioxide

• P: High in oxygen

  Q: Low in carbon dioxide

• P: High in oxygen

  Q: High in carbon dioxide

The pie chart shows the composition of air. B stands for?

• Carbon dioxide

• Water vapour

• Nitrogen

• Oxygen

Study the table. Which one is correct?

• (1) A and B only

• (2) A and C only

• (3) B and C only

• (4) A, B and D only

The graph shows the composition of air in a garden. Gas Y is carbon dioxide and gas Z is oxygen. Which one is correct?

• (1) Plants give out more oxygen at night.

• (2) Plants do not take in oxygen when photosynthesis is happening.

• (3) Oxygen is produced by plants during photosynthesis when there is light.

• (4) Plants do not give out carbon dioxide when photosynthesis is happening.

6 healthy people were trapped in a lift for some time. There is no fresh air entering the lift during this period of time. No air could escape as well. What would happen to the amount of gases in the lift?

• (1)

• (2)

• (3)

• (4)

Leaves have tiny openings called stomata on their surfaces. What is the relationship between the size of stomata and amount of light from A to B?

• As the size of stomata increases, the amount of light increases.

• As the amount of light increases, the size of stomata increases.

• As the size of stomata decreases, the amount of light decreases.

• As the amount of light decreases, the size of stomata decreases.

Leaves have tiny openings called stomata on their surfaces. What is the relationship between the size of stomata and amount of light from B to C?

• As the size of stomata increases, the amount of light remains the same.

• As the amount of light increases, the size of stomata remains the same.

• As the size of stomata and the amount of light remains the same.