Cambridge IGCSE Biology practice

Paper 3 structured question: Circulatory systems

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Paper

Marks

Topic

Circulatory systems

Exam-style question

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Paper 3Theory (Core)1 marks

The heart acts as a pump in the circulatory system.

Description

Blood is pumped by the heart through a network of blood vessels. Valves ensure blood flows in one direction.

a
Identify the component of the circulatory system that acts as a pump.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)2 marks

Diagram Description

The diagram shows the heart connected to arteries and veins. Valves are present in some veins.

a
Describe the role of valves in the circulatory system.
Your answer
Aim for approximately 2 distinct marking points.
[2]