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8.1 Exchange surfaces and diffusion

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Question 4
F

A plant takes in water and mineral ions through its roots.

Which statement correctly describes why both substances are needed?

[1]
A

Water supplies energy; mineral ions help make essential substances.

B

Water acts as a solvent; mineral ions help make essential substances.

C

Water acts as a solvent; mineral ions supply energy for respiration.

D

Water supplies energy; mineral ions supply energy for respiration.

Markscheme

8.1 Exchange surfaces and diffusion Questions

  1. GCSE
  2. /Biology
  3. /8.1 Exchange surfaces and diffusion

42 exam-style questions on Edexcel GCSE Biology 8.1 Exchange surfaces and diffusion, covering 8.1.1 Introduction to exchange and transport, 8.1.2 Alveoli adapted for gas exchange, 8.1.3 Factors affecting rate of diffusion, and 8.1.4 Rate of diffusion using Fick's law. Each one has a worked solution and a mark scheme showing where the marks go.

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