CAIE IGCSE Biology EXTENDED 9.1.2 Single circulation of a fish
CAIE IGCSE Biology EXTENDED 9.1.2 Single circulation of a fish
Practise tracing fish blood flow through heart, gills and body, then compare single circulation with mammalian double circulation on diagrams.
How this is tested
- trace the pathway heart to gills to body to heart on labelled fish diagrams
- compare fish and mammal circuits using chambers, septum and oxygenated blood flow