Course image: Steven Severinghaus [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.
Grateful acknowledgement is made to the following sources for permission to reproduce material in this course.
Parts of this text come from Chapter 4 of Why People Need Plants: © 2010 The Board of Trustees of the Royal Botanic Gardens, Kew and The Open University.
Fig. 8a © James King-Holmes/Science Photo Library.
Fig. 8b © Brian Gadsby/Science Photo Library.
Fig. 9 © Dr Rob Stepney/Science Photo Library.
Fig. 10 © Nigel Cattlin/Alamy.
Fig. 11© Andrew Lawson/www.garden-collection.com.
Fig. 12 © Zhang Liwei/Dreamstime.com.
Fig. 13 © Andrew McRobb / RBG Kew.
Fig. 15 (wheat) © George Mastoridis/Dreamstime.com.
Fig. 15 (sugar beet) © Wessel Cirkel/Dreamstime.com.
Fig. 15 (sugar cane) © Andrew McRobb/RBG Kew.
Fig. 15 (sugar) © foodfolio/Alamy.
Fig. 17 © Howard Davies/Alamy.
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