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2.2 The challenges of size

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Question 20
F

A student uses a simple potometer to investigate water uptake by a leafy shoot.

An air bubble moves along a capillary tube as the shoot takes up water.

Which measurement should the student take to calculate the rate of water uptake?

[1]
A

The mass of the shoot at the start and end of the investigation

B

The number of air bubbles that enter the tube in five minutes

C

The volume of water left in the reservoir after five minutes

D

The distance the air bubble moves in a measured period of time

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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