Read Aquatic and aerial respiration
This SOF ISO pattern tests classify animals by traits. Read the condition carefully, then use the method below before you solve.
Living-system questions are solved by matching a structure or organism to its function, process and stated condition.
Gas exchange means oxygen in, carbon dioxide out
Oxygen in, carbon dioxide out, across the respiratory surface
Name the respiratory surface first, then trace oxygen to it and carbon dioxide away from it. Different organisms use different surfaces.
Find the tested idea
Name the biological structure, process or relationship being tested before comparing the options.
Work from the evidence
Link the structure to its function, or trace the process in its natural order. Use the stated condition rather than a memorised exception.
Verify before choosing
Use the wording, diagram and units exactly as given. Select an option only after it satisfies every stated condition.
OlympIQ exam lens
- ✓Identify the biological level.
- ✓Match structure with function.
- ✓Check the condition in the stem.
Check that the option uses the correct level of organisation: part, organism, population or ecosystem.
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