C4.1.3—Random quadrat sampling Topic Practice
C4.1.3—Random quadrat sampling Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Practise planning random quadrat sampling, using transects, counting sessile organisms, estimating plant populations and reading fieldwork diagrams.
How this is tested
- outline how quadrats are placed randomly and used to estimate plant population size
- distinguish quadrats from transects when gathering distribution or abundance data
- determine quadrat area from scale information and include suitable units
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