Explain the advantage for larger animals of having a specialised system that facilitates oxygen uptake - AQA - A-Level Biology - Question 2 - 2021 - Paper 1

Larger animals require a more efficient system for oxygen uptake due to their greater volume and the need for a larger surface area to support their metabolic demands. A specialised system facilitates faster diffusion of oxygen owing to shorter diffusion pathways and a larger surface area-to-volume ratio, making it more effective in meeting their oxygen needs.