Single and Double Circulatory Systems A level SNAB Biology Pearson

The first slide asks students to recall why larger, more metabolically active organisms need a transport system (answers included). Students are then shown the circulatory system of a fish, a frog, a spider and a cricket and are introduced to open and closed circulatory systems. Students then compare the circulatory systems of the different mammal groups. There is a worksheet included and answer are all on the PowerPoint. Students then compare and contrast a frog’s circulatory system to that of a mammal. This is in the form of a Venn Diagram. Worksheet included and answers appear in the presentation.