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2.2 The challenges of size

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Question 14

A freshly cut sprig of thyme is left in dry laboratory conditions for six hours. Its cut end is sealed so that water is lost only from its leaves.

Mass at start in g\text{g}gMass after six hours in g\text{g}g
8.407.14

Calculate the percentage decrease in the mass of the thyme sprig over the six hours.

[2]
Markscheme

2.2 The challenges of size Questions

  1. GCSE
  2. /Biology
  3. /2.2 The challenges of size

114 exam-style questions on OCR GCSE Biology 2.2 The challenges of size, covering 2.2.1 Exchange surfaces and surface area : volume ratio, 2.2.2 Substances transported in organisms, 2.2.3 The human circulatory system, 2.2.4 The heart and blood vessels, 2.2.5 Red blood cells and plasma, 2.2.6 Uptake of water and mineral ions by plants, 2.2.7 Transpiration and translocation, 2.2.8 Xylem and phloem, 2.2.9 Environmental factors and water uptake, and 2.2.10 Using a potometer. Each one has a worked solution and a mark scheme showing where the marks go.

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