for gas exchange gas exchange surface of fish whilst minimising or insects, or temporary water loss. mounts of gills Describe the 8.4.2.1 and 8.4.2.3. structure of fish Explain how fish gills are adapted to maximise gas exchange, including counter current flow. Extension Dissection of fish gills and locust to investigate filament and tracheal systems. View locust mounts and prepared gill mounts under microscope. Observe breathing movements of a stick insect held in a boiling tube. Time Learning activity with opportunity Assessment Learning Outcome Resources Learning objective taken to develop skills opportunities
for gas exchange whilst minimising water loss. Describe the structure of fish Explain how fish gills are adapted to maximise gas exchange, including counter current flow. gas exchange surface of fish or insects, or temporary mounts of gills 8.4.2.1 and 8.4.2.3. Extension Dissection of fish gills and locust to investigate filament and tracheal systems. View locust mounts and prepared gill mounts under microscope. Observe breathing movements of a stick insect held in a boiling tube. Learning objective Time taken Learning Outcome Learning activity with opportunity to develop skills Assessment opportunities Resources
AQA-7401-SOW.DOCX