IB Biology C3.1.2 Hierarchy in multicellular organisms
IB Biology C3.1.2 Hierarchy in multicellular organisms

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise why multicellular organisms show properties that arise from interactions among many cells rather than from cells alone.
How this is tested
- explain why multicellular properties depend on interactions among many cells
- distinguish emergent properties from simply having more genes or more cells
- interpret MCQ options that contrast unicellular and multicellular organisation
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