C4.1.10—Community
Community explains how ecological evidence links organisms, resources and interactions to population size, distribution or community structure in a habitat.
- Syllabus
- First assessment 2025
- Objective
- C4.1.10
- Level
- HL
Exam analysis
Chance of appearing1%of analysed past papers
Latest appearanceMay 2021
Most common paperPaper1
Typical marks1
Common command terms
- Identify
- State
- Suggest
- Evaluate
- Compare
- Contrast
- Describe
- Explain
Scoring notes
- Common mistake
- Including abiotic factors in the definition of community instead of reserving them for ecosystem.
Recent exam appearances
May 2021Paper1 ["HL"] · TZ113[ 1 ]C4.1.10—Community
Practice this objective
Coverage 2021–2021 · Updated 16 Jul 2026
Concept essentials
- Community must be linked to the correct ecological unit, method or species interaction.
- The evidence for community depends on measurable abundance, distribution, survival or resource patterns.
- Community is clearest when cause, ecological process and population outcome are kept distinct.
- Field or graph evidence for community needs biological interpretation, not values alone.