Cambridge IGCSE Biology practice

Paper 3 structured question: Water uptake

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Topic

Water uptake

Exam-style question

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Paper 3Theory (Core)2 marks

Root hairs are tiny extensions on the surface of plant roots.

Diagram Description

A diagram shows a root with many small root hairs extending into the soil.

a
State why the extensive surface area of root hairs helps the plant.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 3Theory (Core)2 marks

Description

Root hairs are microscopic extensions of root epidermal cells that increase the root's surface area.

a
Identify two substances absorbed by root hairs.
Your answer
Aim for approximately 2 distinct marking points.
[2]