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2.2 The challenges of size

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Question 32
H

A plant is moved from a dark room into bright light.

The rate of transpiration increases.

Which statement explains why?

[1]
A

Light heats the water in the xylem, so it moves up the stem faster.

B

Light increases photosynthesis, so more water is made in the leaves.

C

Light closes the stomata, so water vapour builds up inside the leaf.

D

Light causes more stomata to open, so more water vapour diffuses out.

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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