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9.3 Material cycles and decomposition

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Question 19

Water absorbed by the roots of a sunflower travels through the xylem. It evaporates from cells in the leaves, and the water vapour then diffuses through the stomata.

Which process describes this whole sequence?

[1]
A

Evaporation.

B

Diffusion.

C

Transpiration.

D

Respiration.

Markscheme

9.3 Material cycles and decomposition Questions

  1. GCSE
  2. /Biology
  3. /9.3 Material cycles and decomposition

101 exam-style questions on Edexcel GCSE Biology 9.3 Material cycles and decomposition, covering 9.3.1 Cycling of materials through ecosystems, 9.3.2 The carbon cycle, 9.3.3 The water cycle, 9.3.4 The nitrogen cycle, 9.3.5 Indicator species and pollution, 9.3.6 Decomposition in preservation and composting, and 9.3.7 Rate changes in decay of biological material. Each one has a worked solution and a mark scheme showing where the marks go.

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