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WalesBiologyQuick questions
Unit 2: Biodiversity and Physiology of Body Systems
Quick questions on Adaptations for gas exchange - WJEC A-Level Biology
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
State three features of an efficient gas exchange surface. [1 mark]
What is q2?Show answer
Explain why counter-current flow is more efficient than parallel flow in fish gills. [2 marks]
What is q3?Show answer
Explain why a single-celled organism does not need a specialised gas exchange surface. [2 marks]
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