Cambridge IGCSE Biology practice

Paper 4 structured question: Translocation

Try the question first, then check the answer and practise the same topic again.

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Paper

Marks

Topic

Translocation

Exam-style question

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Paper 4Theory (Extended)4 marks

Plants transport sucrose and amino acids from sources to sinks to support growth and storage.

Diagram Description

Diagram shows movement of sucrose and amino acids from leaves to roots and fruits.

a
Describe what is meant by a source in plants.
Your answer
Aim for approximately 2 distinct marking points.
[2]
b
Describe the role of a sink in plants.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 4Theory (Extended)3 marks

Description

Sources are regions in plants that produce and release sucrose or amino acids. Sinks are regions that use or store these substances.

a
Identify a source in a plant and state what it produces and releases.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Identify a sink in a plant and describe its role.
Your answer
Aim for approximately 2 distinct marking points.
[2]