Animal Circulatory Systems and Diffusion Quiz

Diffusion is faster in smaller organisms

The time it takes to diffuse is proportional to the square of the distance (correct)

Diffusion is hindered by large molecules in longer distances

Diffusion is more effective in a fluid-like circulatory system

Aquatic animals

Large animals with complex circulatory systems

Small or thin animals (correct)

Animals with specialized exchange organs

By utilizing specialized exchange organs

By diffusion through the skin

Through direct cellular exchange

Via a fluid-like circulatory system (correct)