Cambridge IGCSE Biology practice

Paper 3 structured question: Water uptake

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Paper

Marks

Topic

Water uptake

Exam-style question

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Paper 3Theory (Core)2 marks

Root hair cells help plants absorb water and minerals efficiently.

Description

Root hair cells have thin walls and a large vacuole. They grow out from the root surface to increase surface area.

a
State why root hair cells have a large surface area.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
Identify one feature of root hair cells that helps absorption.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)2 marks

Diagram Description

The diagram shows a root hair cell with a long extension increasing its surface area.

a
Identify the part of the root hair cell that increases its surface area.
Your answer
Aim for approximately 1 distinct marking point.
[1]
b
State one role of root hair cells.
Your answer
Aim for approximately 1 distinct marking point.
[1]