Explain that organs are organised into organ systems that work together in whole organisms.

Organs are organised into organ systems that work together in whole organisms. Principles of organisation sits within Principles of organisation, so this idea should be explained in that specific biological context rather than as an isolated phrase. A useful term here is organ systems, because organ systems is a curriculum-aligned term linked to the learning objective: Explain that organs are organised into organ systems that work together in whole organisms. Avoid giving a vague answer instead of directly addressing: Explain that organs are organised into organ systems that work together in whole organisms; instead answer by clearly explaining how to explain that organs are organised into organ systems that work together in whole organisms. Use precise biological vocabulary when you explain how to explain that organs are organised into organ systems that work together in whole organisms. This keeps your answer tightly aligned to the approved learning objective for Principles of organisation.