P5 Revision Topics: Human & Plant Systems

Jack removed the outer ring of the stem from a plant between P and Q as shown. Only the food-carrying tubes were cut away with this outer ring. After ten days, which of the following are likely observations that Jack could make about the plant? A: Part P will be swollen. B: Part Q will be swollen C: The leaves have dried up. D: The fruits have grown bigger.

• A and B only

• A and D only

• B, C and D only

• A, B, C and D

The diagram shows blood flowing through the large intestine of the human body. Which of the following is correct about the amount of oxygen, carbon dioxide and water in the blood flowing in A as compared to B?

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The diagram shows several air sacs, surrounded by blood vessels, which are found in our lungs. The blood vessel X carries blood from the heart while the blood vessel Y carries blood to the heart. Which of the following statements are correct about X, Y and the air sac?

• A and B only

• C and D only

• B, C and D only

• A, B and D only

The diagram shows parts of the digestive system. Which of the following statements are correct?

• A and B only

• A and C only

• B and D only

• C and D only

Which one of the following diagrams shows the correct paths taken by food and water as they are transported in a plant?

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Which of the following are parts of the respiratory system?

• heart, blood and blood vessels

• nose, windpipe and lungs

• lungs, heart and blood vessels

• lungs, windpipe and blood vessels

The graph shows the volume of blood passing through the small intestine during rest and during exercise over a period of time. Based on the graph, how does exercising after a meal affect the absorption of digested food in the small intestine?

• Less blood flows to the small intestine so there is less absorption.

• More blood flows to the small intestine so there is more absorption.

• Less blood flows to the small intestine so there is more absorption.

• More blood flows to the small intestine so there is more absorption.

The chart shows the composition of air. Which of the following correctly identifies the gases in the air?

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Vicky removed two rings of different depths at the stem of a plant as shown in Diagram 1. The enlarged view of a section of the stem is shown in Diagram 2. Which one of the following shows the colour of the leaves after the plant was placed in a beaker of blue-coloured water for a few hours?

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The bar graph shows the amount of food digested in various parts of the human digestive system six hours after a meal. Based on the given graph, which one of the following best represents W, X, Y and Z respectively?

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