AQA Biology Unit 2 - Exchange and Transport Chapter 13 from AS textbook. 3.0 / 5 based on 4 ratings ? BiologyBiological molecules, organic chemistry and biochemistryASAll boards Created by: CharlotteCreated on: 29-04-12 18:23 Spiracles on an insect are used to allow gases to diffuse into the body cavity? True 1 of 4 The countercurrent exchange principle allows for 50% of the oxygen to diffuse into the blood? False 2 of 4 What is the point when the carbon dioxide produced and the carbon dioxide absorbed in plants are the same? Condensation point 3 of 4 What are the plants called that are able to survive in very dry conditions? Xerophytes 4 of 4
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